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Finding the Fourth Proportional to 476,642.80, 657,778.56 and 261,787.60

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Solution

The fourth proportional to 476,642.80, 657,778.56 and 261,787.60 is: 361,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,642.80 : 657,778.56 = 261,787.60 : x
  2. Step 2: Convert to fraction form
    476,642.80/657,778.56 = 261,787.60/x
  3. Step 3: Cross multiply
    476,642.80x = 657,778.56 × 261,787.60
  4. Step 4: Simplify right side
    476,642.80x = 172,198,270,553.86
  5. Step 5: Solve for x
    x = 172,198,270,553.86/476,642.80
  6. Step 6: Final answer
    x = 361,273.20

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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.