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Finding the Fourth Proportional to 456,585.60, 628,781.76 and 329,059.20

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Solution

The fourth proportional to 456,585.60, 628,781.76 and 329,059.20 is: 453,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,585.60 : 628,781.76 = 329,059.20 : x
  2. Step 2: Convert to fraction form
    456,585.60/628,781.76 = 329,059.20/x
  3. Step 3: Cross multiply
    456,585.60x = 628,781.76 × 329,059.20
  4. Step 4: Simplify right side
    456,585.60x = 206,906,422,920.19
  5. Step 5: Solve for x
    x = 206,906,422,920.19/456,585.60
  6. Step 6: Final answer
    x = 453,160.20

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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.