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Finding the Fourth Proportional to 478,809.30, 718,213.95 and 419,711.70

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Solution

The fourth proportional to 478,809.30, 718,213.95 and 419,711.70 is: 629,567.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,809.30 : 718,213.95 = 419,711.70 : x
  2. Step 2: Convert to fraction form
    478,809.30/718,213.95 = 419,711.70/x
  3. Step 3: Cross multiply
    478,809.30x = 718,213.95 × 419,711.70
  4. Step 4: Simplify right side
    478,809.30x = 301,442,797,918.22
  5. Step 5: Solve for x
    x = 301,442,797,918.22/478,809.30
  6. Step 6: Final answer
    x = 629,567.55

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Similar ratio
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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.