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Finding the Fourth Proportional to 636,601.68, 878,516.28 and 346,215.96

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Solution

The fourth proportional to 636,601.68, 878,516.28 and 346,215.96 is: 477,781.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,601.68 : 878,516.28 = 346,215.96 : x
  2. Step 2: Convert to fraction form
    636,601.68/878,516.28 = 346,215.96/x
  3. Step 3: Cross multiply
    636,601.68x = 878,516.28 × 346,215.96
  4. Step 4: Simplify right side
    636,601.68x = 304,156,357,255.83
  5. Step 5: Solve for x
    x = 304,156,357,255.83/636,601.68
  6. Step 6: Final answer
    x = 477,781.27

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1.5x scale

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.