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Finding the Fourth Proportional to 625,071.56, 862,602.90 and 338,591.65

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Solution

The fourth proportional to 625,071.56, 862,602.90 and 338,591.65 is: 467,258.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,071.56 : 862,602.90 = 338,591.65 : x
  2. Step 2: Convert to fraction form
    625,071.56/862,602.90 = 338,591.65/x
  3. Step 3: Cross multiply
    625,071.56x = 862,602.90 × 338,591.65
  4. Step 4: Simplify right side
    625,071.56x = 292,070,133,199.81
  5. Step 5: Solve for x
    x = 292,070,133,199.81/625,071.56
  6. Step 6: Final answer
    x = 467,258.71

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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.