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Finding the Fourth Proportional to 549,697.40, 824,546.10 and 425,127.80

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Solution

The fourth proportional to 549,697.40, 824,546.10 and 425,127.80 is: 637,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,697.40 : 824,546.10 = 425,127.80 : x
  2. Step 2: Convert to fraction form
    549,697.40/824,546.10 = 425,127.80/x
  3. Step 3: Cross multiply
    549,697.40x = 824,546.10 × 425,127.80
  4. Step 4: Simplify right side
    549,697.40x = 350,537,469,491.58
  5. Step 5: Solve for x
    x = 350,537,469,491.58/549,697.40
  6. Step 6: Final answer
    x = 637,691.70

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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.