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Finding the Fourth Proportional to 680,013.92, 938,389.62 and 374,070.90

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Solution

The fourth proportional to 680,013.92, 938,389.62 and 374,070.90 is: 516,201.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,013.92 : 938,389.62 = 374,070.90 : x
  2. Step 2: Convert to fraction form
    680,013.92/938,389.62 = 374,070.90/x
  3. Step 3: Cross multiply
    680,013.92x = 938,389.62 × 374,070.90
  4. Step 4: Simplify right side
    680,013.92x = 351,024,249,704.06
  5. Step 5: Solve for x
    x = 351,024,249,704.06/680,013.92
  6. Step 6: Final answer
    x = 516,201.57

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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.