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Finding the Fourth Proportional to 819,505.70, 1,229,258.55 and 814,256.90

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Solution

The fourth proportional to 819,505.70, 1,229,258.55 and 814,256.90 is: 1,221,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,505.70 : 1,229,258.55 = 814,256.90 : x
  2. Step 2: Convert to fraction form
    819,505.70/1,229,258.55 = 814,256.90/x
  3. Step 3: Cross multiply
    819,505.70x = 1,229,258.55 × 814,256.90
  4. Step 4: Simplify right side
    819,505.70x = 1,000,932,256,221.50
  5. Step 5: Solve for x
    x = 1,000,932,256,221.50/819,505.70
  6. Step 6: Final answer
    x = 1,221,385.35

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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.