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Finding the Fourth Proportional to 625,021.29, 862,529.63 and 338,540.49

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Solution

The fourth proportional to 625,021.29, 862,529.63 and 338,540.49 is: 467,186.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,021.29 : 862,529.63 = 338,540.49 : x
  2. Step 2: Convert to fraction form
    625,021.29/862,529.63 = 338,540.49/x
  3. Step 3: Cross multiply
    625,021.29x = 862,529.63 × 338,540.49
  4. Step 4: Simplify right side
    625,021.29x = 292,001,201,887.02
  5. Step 5: Solve for x
    x = 292,001,201,887.02/625,021.29
  6. Step 6: Final answer
    x = 467,186.01

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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.