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Finding the Fourth Proportional to 1,237,103,088.02, 1,707,209,010.58 and 728,487,991.70

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Solution

The fourth proportional to 1,237,103,088.02, 1,707,209,010.58 and 728,487,991.70 is: 1,005,317,402.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237,103,088.02 : 1,707,209,010.58 = 728,487,991.70 : x
  2. Step 2: Convert to fraction form
    1,237,103,088.02/1,707,209,010.58 = 728,487,991.70/x
  3. Step 3: Cross multiply
    1,237,103,088.02x = 1,707,209,010.58 × 728,487,991.70
  4. Step 4: Simplify right side
    1,237,103,088.02x = 1,243,681,263,529,568,256
  5. Step 5: Solve for x
    x = 1,243,681,263,529,568,256/1,237,103,088.02
  6. Step 6: Final answer
    x = 1,005,317,402.87

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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.