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Finding the Fourth Proportional to 636,912.48, 878,921.10 and 350,432.76

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Solution

The fourth proportional to 636,912.48, 878,921.10 and 350,432.76 is: 483,587.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,912.48 : 878,921.10 = 350,432.76 : x
  2. Step 2: Convert to fraction form
    636,912.48/878,921.10 = 350,432.76/x
  3. Step 3: Cross multiply
    636,912.48x = 878,921.10 × 350,432.76
  4. Step 4: Simplify right side
    636,912.48x = 308,002,746,895.24
  5. Step 5: Solve for x
    x = 308,002,746,895.24/636,912.48
  6. Step 6: Final answer
    x = 483,587.24

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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.