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Finding the Fourth Proportional to 539,124.70, 808,168.65 and 419,115.10

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Solution

The fourth proportional to 539,124.70, 808,168.65 and 419,115.10 is: 628,269.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,124.70 : 808,168.65 = 419,115.10 : x
  2. Step 2: Convert to fraction form
    539,124.70/808,168.65 = 419,115.10/x
  3. Step 3: Cross multiply
    539,124.70x = 808,168.65 × 419,115.10
  4. Step 4: Simplify right side
    539,124.70x = 338,715,684,561.62
  5. Step 5: Solve for x
    x = 338,715,684,561.62/539,124.70
  6. Step 6: Final answer
    x = 628,269.65

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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.