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Finding the Fourth Proportional to 644,027.16, 888,740.18 and 386,049.84

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Solution

The fourth proportional to 644,027.16, 888,740.18 and 386,049.84 is: 532,738.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,027.16 : 888,740.18 = 386,049.84 : x
  2. Step 2: Convert to fraction form
    644,027.16/888,740.18 = 386,049.84/x
  3. Step 3: Cross multiply
    644,027.16x = 888,740.18 × 386,049.84
  4. Step 4: Simplify right side
    644,027.16x = 343,098,004,290.57
  5. Step 5: Solve for x
    x = 343,098,004,290.57/644,027.16
  6. Step 6: Final answer
    x = 532,738.41

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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.