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Finding the Fourth Proportional to 539,169.40, 808,754.10 and 478,516.60

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Solution

The fourth proportional to 539,169.40, 808,754.10 and 478,516.60 is: 717,774.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,169.40 : 808,754.10 = 478,516.60 : x
  2. Step 2: Convert to fraction form
    539,169.40/808,754.10 = 478,516.60/x
  3. Step 3: Cross multiply
    539,169.40x = 808,754.10 × 478,516.60
  4. Step 4: Simplify right side
    539,169.40x = 387,002,262,168.06
  5. Step 5: Solve for x
    x = 387,002,262,168.06/539,169.40
  6. Step 6: Final answer
    x = 717,774.90

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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.