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Finding the Fourth Proportional to 639,446.80, 958,509.24 and 239,805.76

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Solution

The fourth proportional to 639,446.80, 958,509.24 and 239,805.76 is: 359,460.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,446.80 : 958,509.24 = 239,805.76 : x
  2. Step 2: Convert to fraction form
    639,446.80/958,509.24 = 239,805.76/x
  3. Step 3: Cross multiply
    639,446.80x = 958,509.24 × 239,805.76
  4. Step 4: Simplify right side
    639,446.80x = 229,856,036,765.22
  5. Step 5: Solve for x
    x = 229,856,036,765.22/639,446.80
  6. Step 6: Final answer
    x = 359,460.77

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1.5x scale

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.