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Finding the Fourth Proportional to 807,487.86, 1,211,404.02 and 402,897.62

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Solution

The fourth proportional to 807,487.86, 1,211,404.02 and 402,897.62 is: 604,432.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,487.86 : 1,211,404.02 = 402,897.62 : x
  2. Step 2: Convert to fraction form
    807,487.86/1,211,404.02 = 402,897.62/x
  3. Step 3: Cross multiply
    807,487.86x = 1,211,404.02 × 402,897.62
  4. Step 4: Simplify right side
    807,487.86x = 488,071,796,516.43
  5. Step 5: Solve for x
    x = 488,071,796,516.43/807,487.86
  6. Step 6: Final answer
    x = 604,432.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.