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Finding the Fourth Proportional to 636,520.92, 878,421.42 and 350,063.16

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Solution

The fourth proportional to 636,520.92, 878,421.42 and 350,063.16 is: 483,099.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,520.92 : 878,421.42 = 350,063.16 : x
  2. Step 2: Convert to fraction form
    636,520.92/878,421.42 = 350,063.16/x
  3. Step 3: Cross multiply
    636,520.92x = 878,421.42 × 350,063.16
  4. Step 4: Simplify right side
    636,520.92x = 307,502,978,096.89
  5. Step 5: Solve for x
    x = 307,502,978,096.89/636,520.92
  6. Step 6: Final answer
    x = 483,099.56

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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.