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Finding the Fourth Proportional to 389,616.20, 584,424.30 and 336,472.10

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Solution

The fourth proportional to 389,616.20, 584,424.30 and 336,472.10 is: 504,708.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,616.20 : 584,424.30 = 336,472.10 : x
  2. Step 2: Convert to fraction form
    389,616.20/584,424.30 = 336,472.10/x
  3. Step 3: Cross multiply
    389,616.20x = 584,424.30 × 336,472.10
  4. Step 4: Simplify right side
    389,616.20x = 196,642,471,512.03
  5. Step 5: Solve for x
    x = 196,642,471,512.03/389,616.20
  6. Step 6: Final answer
    x = 504,708.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.