Home / 981,229.06-1,354,208.28-545,689.78

Finding the Fourth Proportional to 981,229.06, 1,354,208.28 and 545,689.78

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Solution

The fourth proportional to 981,229.06, 1,354,208.28 and 545,689.78 is: 753,114.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,229.06 : 1,354,208.28 = 545,689.78 : x
  2. Step 2: Convert to fraction form
    981,229.06/1,354,208.28 = 545,689.78/x
  3. Step 3: Cross multiply
    981,229.06x = 1,354,208.28 × 545,689.78
  4. Step 4: Simplify right side
    981,229.06x = 738,977,618,387.38
  5. Step 5: Solve for x
    x = 738,977,618,387.38/981,229.06
  6. Step 6: Final answer
    x = 753,114.28

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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.