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Finding the Fourth Proportional to 543,306.92, 815,496.74 and 407,900.04

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Solution

The fourth proportional to 543,306.92, 815,496.74 and 407,900.04 is: 612,252.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,306.92 : 815,496.74 = 407,900.04 : x
  2. Step 2: Convert to fraction form
    543,306.92/815,496.74 = 407,900.04/x
  3. Step 3: Cross multiply
    543,306.92x = 815,496.74 × 407,900.04
  4. Step 4: Simplify right side
    543,306.92x = 332,641,152,865.87
  5. Step 5: Solve for x
    x = 332,641,152,865.87/543,306.92
  6. Step 6: Final answer
    x = 612,252.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.