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Finding the Fourth Proportional to 721,063.61, 1,080,832.68 and 271,590

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Solution

The fourth proportional to 721,063.61, 1,080,832.68 and 271,590 is: 407,097.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,063.61 : 1,080,832.68 = 271,590 : x
  2. Step 2: Convert to fraction form
    721,063.61/1,080,832.68 = 271,590/x
  3. Step 3: Cross multiply
    721,063.61x = 1,080,832.68 × 271,590
  4. Step 4: Simplify right side
    721,063.61x = 293,543,347,561.20
  5. Step 5: Solve for x
    x = 293,543,347,561.20/721,063.61
  6. Step 6: Final answer
    x = 407,097.72

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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.