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Finding the Fourth Proportional to 658,276.88, 908,422.09 and 356,470.88

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Solution

The fourth proportional to 658,276.88, 908,422.09 and 356,470.88 is: 491,929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,276.88 : 908,422.09 = 356,470.88 : x
  2. Step 2: Convert to fraction form
    658,276.88/908,422.09 = 356,470.88/x
  3. Step 3: Cross multiply
    658,276.88x = 908,422.09 × 356,470.88
  4. Step 4: Simplify right side
    658,276.88x = 323,826,016,400.45
  5. Step 5: Solve for x
    x = 323,826,016,400.45/658,276.88
  6. Step 6: Final answer
    x = 491,929.81

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1.5x scale

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.