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Finding the Fourth Proportional to 625,270.66, 862,889.56 and 383,686.74

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Solution

The fourth proportional to 625,270.66, 862,889.56 and 383,686.74 is: 529,497.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,270.66 : 862,889.56 = 383,686.74 : x
  2. Step 2: Convert to fraction form
    625,270.66/862,889.56 = 383,686.74/x
  3. Step 3: Cross multiply
    625,270.66x = 862,889.56 × 383,686.74
  4. Step 4: Simplify right side
    625,270.66x = 331,079,281,297.22
  5. Step 5: Solve for x
    x = 331,079,281,297.22/625,270.66
  6. Step 6: Final answer
    x = 529,497.55

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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.