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Finding the Fourth Proportional to 878,614.40, 1,317,046.80 and 404,472.80

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Solution

The fourth proportional to 878,614.40, 1,317,046.80 and 404,472.80 is: 606,306.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,614.40 : 1,317,046.80 = 404,472.80 : x
  2. Step 2: Convert to fraction form
    878,614.40/1,317,046.80 = 404,472.80/x
  3. Step 3: Cross multiply
    878,614.40x = 1,317,046.80 × 404,472.80
  4. Step 4: Simplify right side
    878,614.40x = 532,709,606,927.04
  5. Step 5: Solve for x
    x = 532,709,606,927.04/878,614.40
  6. Step 6: Final answer
    x = 606,306.48

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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.