Home / 1,237,103,084.77-1,707,209,006.09-728,487,988.45

Finding the Fourth Proportional to 1,237,103,084.77, 1,707,209,006.09 and 728,487,988.45

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Solution

The fourth proportional to 1,237,103,084.77, 1,707,209,006.09 and 728,487,988.45 is: 1,005,317,398.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237,103,084.77 : 1,707,209,006.09 = 728,487,988.45 : x
  2. Step 2: Convert to fraction form
    1,237,103,084.77/1,707,209,006.09 = 728,487,988.45/x
  3. Step 3: Cross multiply
    1,237,103,084.77x = 1,707,209,006.09 × 728,487,988.45
  4. Step 4: Simplify right side
    1,237,103,084.77x = 1,243,681,254,703,513,088
  5. Step 5: Solve for x
    x = 1,243,681,254,703,513,088/1,237,103,084.77
  6. Step 6: Final answer
    x = 1,005,317,398.38

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Half scale
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Double scale
Find fourth proportional to 1,237,103,085.77, 1,707,209,007.47 and 728,487,989.45
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.