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Finding the Fourth Proportional to 640,944.73, 882,479.10 and 564,411.88

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Solution

The fourth proportional to 640,944.73, 882,479.10 and 564,411.88 is: 777,105.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,944.73 : 882,479.10 = 564,411.88 : x
  2. Step 2: Convert to fraction form
    640,944.73/882,479.10 = 564,411.88/x
  3. Step 3: Cross multiply
    640,944.73x = 882,479.10 × 564,411.88
  4. Step 4: Simplify right side
    640,944.73x = 498,081,687,891.71
  5. Step 5: Solve for x
    x = 498,081,687,891.71/640,944.73
  6. Step 6: Final answer
    x = 777,105.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.