Home / 766,922.20-1,149,071.10-486,111.40

Finding the Fourth Proportional to 766,922.20, 1,149,071.10 and 486,111.40

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Solution

The fourth proportional to 766,922.20, 1,149,071.10 and 486,111.40 is: 728,335.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,922.20 : 1,149,071.10 = 486,111.40 : x
  2. Step 2: Convert to fraction form
    766,922.20/1,149,071.10 = 486,111.40/x
  3. Step 3: Cross multiply
    766,922.20x = 1,149,071.10 × 486,111.40
  4. Step 4: Simplify right side
    766,922.20x = 558,576,561,120.54
  5. Step 5: Solve for x
    x = 558,576,561,120.54/766,922.20
  6. Step 6: Final answer
    x = 728,335.37

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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.