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Finding the Fourth Proportional to 625,199.96, 862,776.86 and 338,720.06

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Solution

The fourth proportional to 625,199.96, 862,776.86 and 338,720.06 is: 467,434.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,199.96 : 862,776.86 = 338,720.06 : x
  2. Step 2: Convert to fraction form
    625,199.96/862,776.86 = 338,720.06/x
  3. Step 3: Cross multiply
    625,199.96x = 862,776.86 × 338,720.06
  4. Step 4: Simplify right side
    625,199.96x = 292,239,829,785.81
  5. Step 5: Solve for x
    x = 292,239,829,785.81/625,199.96
  6. Step 6: Final answer
    x = 467,434.18

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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.