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Finding the Fourth Proportional to 658,046.80, 908,104.92 and 356,240.80

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Solution

The fourth proportional to 658,046.80, 908,104.92 and 356,240.80 is: 491,612.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,046.80 : 908,104.92 = 356,240.80 : x
  2. Step 2: Convert to fraction form
    658,046.80/908,104.92 = 356,240.80/x
  3. Step 3: Cross multiply
    658,046.80x = 908,104.92 × 356,240.80
  4. Step 4: Simplify right side
    658,046.80x = 323,504,023,184.74
  5. Step 5: Solve for x
    x = 323,504,023,184.74/658,046.80
  6. Step 6: Final answer
    x = 491,612.49

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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.