Home / 819,402.88-1,129,913.76-647,034.88

Finding the Fourth Proportional to 819,402.88, 1,129,913.76 and 647,034.88

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Solution

The fourth proportional to 819,402.88, 1,129,913.76 and 647,034.88 is: 892,227.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,402.88 : 1,129,913.76 = 647,034.88 : x
  2. Step 2: Convert to fraction form
    819,402.88/1,129,913.76 = 647,034.88/x
  3. Step 3: Cross multiply
    819,402.88x = 1,129,913.76 × 647,034.88
  4. Step 4: Simplify right side
    819,402.88x = 731,093,614,111.95
  5. Step 5: Solve for x
    x = 731,093,614,111.95/819,402.88
  6. Step 6: Final answer
    x = 892,227.29

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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.