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Finding the Fourth Proportional to 625,521.84, 863,221.28 and 339,041.04

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Solution

The fourth proportional to 625,521.84, 863,221.28 and 339,041.04 is: 467,877.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,521.84 : 863,221.28 = 339,041.04 : x
  2. Step 2: Convert to fraction form
    625,521.84/863,221.28 = 339,041.04/x
  3. Step 3: Cross multiply
    625,521.84x = 863,221.28 × 339,041.04
  4. Step 4: Simplify right side
    625,521.84x = 292,667,440,521.33
  5. Step 5: Solve for x
    x = 292,667,440,521.33/625,521.84
  6. Step 6: Final answer
    x = 467,877.25

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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.