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Finding the Fourth Proportional to 502,149.68, 693,086.08 and 287,413.68

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Solution

The fourth proportional to 502,149.68, 693,086.08 and 287,413.68 is: 396,699.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,149.68 : 693,086.08 = 287,413.68 : x
  2. Step 2: Convert to fraction form
    502,149.68/693,086.08 = 287,413.68/x
  3. Step 3: Cross multiply
    502,149.68x = 693,086.08 × 287,413.68
  4. Step 4: Simplify right side
    502,149.68x = 199,202,420,809.57
  5. Step 5: Solve for x
    x = 199,202,420,809.57/502,149.68
  6. Step 6: Final answer
    x = 396,699.29

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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.