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Finding the Fourth Proportional to 409,005.20, 613,594.20 and 124,672.40

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Solution

The fourth proportional to 409,005.20, 613,594.20 and 124,672.40 is: 187,034.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,005.20 : 613,594.20 = 124,672.40 : x
  2. Step 2: Convert to fraction form
    409,005.20/613,594.20 = 124,672.40/x
  3. Step 3: Cross multiply
    409,005.20x = 613,594.20 × 124,672.40
  4. Step 4: Simplify right side
    409,005.20x = 76,498,261,540.08
  5. Step 5: Solve for x
    x = 76,498,261,540.08/409,005.20
  6. Step 6: Final answer
    x = 187,034.94

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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.