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Finding the Fourth Proportional to 636,718.24, 878,700.72 and 350,233.12

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Solution

The fourth proportional to 636,718.24, 878,700.72 and 350,233.12 is: 483,337.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,718.24 : 878,700.72 = 350,233.12 : x
  2. Step 2: Convert to fraction form
    636,718.24/878,700.72 = 350,233.12/x
  3. Step 3: Cross multiply
    636,718.24x = 878,700.72 × 350,233.12
  4. Step 4: Simplify right side
    636,718.24x = 307,750,094,711.85
  5. Step 5: Solve for x
    x = 307,750,094,711.85/636,718.24
  6. Step 6: Final answer
    x = 483,337.96

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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.