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Finding the Fourth Proportional to 636,541.92, 878,407.74 and 350,061.12

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Solution

The fourth proportional to 636,541.92, 878,407.74 and 350,061.12 is: 483,073.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,541.92 : 878,407.74 = 350,061.12 : x
  2. Step 2: Convert to fraction form
    636,541.92/878,407.74 = 350,061.12/x
  3. Step 3: Cross multiply
    636,541.92x = 878,407.74 × 350,061.12
  4. Step 4: Simplify right side
    636,541.92x = 307,496,397,281.07
  5. Step 5: Solve for x
    x = 307,496,397,281.07/636,541.92
  6. Step 6: Final answer
    x = 483,073.29

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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.