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Finding the Fourth Proportional to 636,641.46, 878,572.17 and 350,163.90

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Solution

The fourth proportional to 636,641.46, 878,572.17 and 350,163.90 is: 483,230.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,641.46 : 878,572.17 = 350,163.90 : x
  2. Step 2: Convert to fraction form
    636,641.46/878,572.17 = 350,163.90/x
  3. Step 3: Cross multiply
    636,641.46x = 878,572.17 × 350,163.90
  4. Step 4: Simplify right side
    636,641.46x = 307,644,257,478.66
  5. Step 5: Solve for x
    x = 307,644,257,478.66/636,641.46
  6. Step 6: Final answer
    x = 483,230.01

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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.