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Finding the Fourth Proportional to 636,930.64, 955,765.14 and 321,412.24

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Solution

The fourth proportional to 636,930.64, 955,765.14 and 321,412.24 is: 482,304.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,930.64 : 955,765.14 = 321,412.24 : x
  2. Step 2: Convert to fraction form
    636,930.64/955,765.14 = 321,412.24/x
  3. Step 3: Cross multiply
    636,930.64x = 955,765.14 × 321,412.24
  4. Step 4: Simplify right side
    636,930.64x = 307,194,614,561.31
  5. Step 5: Solve for x
    x = 307,194,614,561.31/636,930.64
  6. Step 6: Final answer
    x = 482,304.66

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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.