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Finding the Fourth Proportional to 669,562.22, 924,013.91 and 393,939.32

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Solution

The fourth proportional to 669,562.22, 924,013.91 and 393,939.32 is: 543,646.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,562.22 : 924,013.91 = 393,939.32 : x
  2. Step 2: Convert to fraction form
    669,562.22/924,013.91 = 393,939.32/x
  3. Step 3: Cross multiply
    669,562.22x = 924,013.91 × 393,939.32
  4. Step 4: Simplify right side
    669,562.22x = 364,005,407,740.72
  5. Step 5: Solve for x
    x = 364,005,407,740.72/669,562.22
  6. Step 6: Final answer
    x = 543,646.87

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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.