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Finding the Fourth Proportional to 404,472.60, 606,708.90 and 278,501.40

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Solution

The fourth proportional to 404,472.60, 606,708.90 and 278,501.40 is: 417,752.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,472.60 : 606,708.90 = 278,501.40 : x
  2. Step 2: Convert to fraction form
    404,472.60/606,708.90 = 278,501.40/x
  3. Step 3: Cross multiply
    404,472.60x = 606,708.90 × 278,501.40
  4. Step 4: Simplify right side
    404,472.60x = 168,969,278,042.46
  5. Step 5: Solve for x
    x = 168,969,278,042.46/404,472.60
  6. Step 6: Final answer
    x = 417,752.10

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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.