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Finding the Fourth Proportional to 639,937.92, 957,494.72 and 382,817.92

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Solution

The fourth proportional to 639,937.92, 957,494.72 and 382,817.92 is: 572,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,937.92 : 957,494.72 = 382,817.92 : x
  2. Step 2: Convert to fraction form
    639,937.92/957,494.72 = 382,817.92/x
  3. Step 3: Cross multiply
    639,937.92x = 957,494.72 × 382,817.92
  4. Step 4: Simplify right side
    639,937.92x = 366,546,137,121.38
  5. Step 5: Solve for x
    x = 366,546,137,121.38/639,937.92
  6. Step 6: Final answer
    x = 572,783.90

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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.