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Finding the Fourth Proportional to 636,655.80, 955,425.30 and 479,215.80

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Solution

The fourth proportional to 636,655.80, 955,425.30 and 479,215.80 is: 719,156.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,655.80 : 955,425.30 = 479,215.80 : x
  2. Step 2: Convert to fraction form
    636,655.80/955,425.30 = 479,215.80/x
  3. Step 3: Cross multiply
    636,655.80x = 955,425.30 × 479,215.80
  4. Step 4: Simplify right side
    636,655.80x = 457,854,899,479.74
  5. Step 5: Solve for x
    x = 457,854,899,479.74/636,655.80
  6. Step 6: Final answer
    x = 719,156.10

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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.