Home / 1,071,128.80-1,478,157.62-612,253.18

Finding the Fourth Proportional to 1,071,128.80, 1,478,157.62 and 612,253.18

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Solution

The fourth proportional to 1,071,128.80, 1,478,157.62 and 612,253.18 is: 844,909.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071,128.80 : 1,478,157.62 = 612,253.18 : x
  2. Step 2: Convert to fraction form
    1,071,128.80/1,478,157.62 = 612,253.18/x
  3. Step 3: Cross multiply
    1,071,128.80x = 1,478,157.62 × 612,253.18
  4. Step 4: Simplify right side
    1,071,128.80x = 905,006,703,386.23
  5. Step 5: Solve for x
    x = 905,006,703,386.23/1,071,128.80
  6. Step 6: Final answer
    x = 844,909.32

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Double scale
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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.