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Finding the Fourth Proportional to 636,672.20, 955,008.30 and 257,774.45

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Solution

The fourth proportional to 636,672.20, 955,008.30 and 257,774.45 is: 386,661.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,672.20 : 955,008.30 = 257,774.45 : x
  2. Step 2: Convert to fraction form
    636,672.20/955,008.30 = 257,774.45/x
  3. Step 3: Cross multiply
    636,672.20x = 955,008.30 × 257,774.45
  4. Step 4: Simplify right side
    636,672.20x = 246,176,739,277.94
  5. Step 5: Solve for x
    x = 246,176,739,277.94/636,672.20
  6. Step 6: Final answer
    x = 386,661.68

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Similar ratio
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1.5x scale

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.