Home / 819,694.20-1,228,229.10-538,883.40

Finding the Fourth Proportional to 819,694.20, 1,228,229.10 and 538,883.40

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Solution

The fourth proportional to 819,694.20, 1,228,229.10 and 538,883.40 is: 807,462.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,694.20 : 1,228,229.10 = 538,883.40 : x
  2. Step 2: Convert to fraction form
    819,694.20/1,228,229.10 = 538,883.40/x
  3. Step 3: Cross multiply
    819,694.20x = 1,228,229.10 × 538,883.40
  4. Step 4: Simplify right side
    819,694.20x = 661,872,273,386.94
  5. Step 5: Solve for x
    x = 661,872,273,386.94/819,694.20
  6. Step 6: Final answer
    x = 807,462.43

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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.