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Finding the Fourth Proportional to 625,338.24, 862,649.80 and 395,508.45

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Solution

The fourth proportional to 625,338.24, 862,649.80 and 395,508.45 is: 545,601.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,338.24 : 862,649.80 = 395,508.45 : x
  2. Step 2: Convert to fraction form
    625,338.24/862,649.80 = 395,508.45/x
  3. Step 3: Cross multiply
    625,338.24x = 862,649.80 × 395,508.45
  4. Step 4: Simplify right side
    625,338.24x = 341,185,285,290.81
  5. Step 5: Solve for x
    x = 341,185,285,290.81/625,338.24
  6. Step 6: Final answer
    x = 545,601.19

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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.