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Finding the Fourth Proportional to 625,090.10, 862,626.45 and 338,609.30

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Solution

The fourth proportional to 625,090.10, 862,626.45 and 338,609.30 is: 467,281.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,090.10 : 862,626.45 = 338,609.30 : x
  2. Step 2: Convert to fraction form
    625,090.10/862,626.45 = 338,609.30/x
  3. Step 3: Cross multiply
    625,090.10x = 862,626.45 × 338,609.30
  4. Step 4: Simplify right side
    625,090.10x = 292,093,338,395.99
  5. Step 5: Solve for x
    x = 292,093,338,395.99/625,090.10
  6. Step 6: Final answer
    x = 467,281.98

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1.5x scale

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.