Home / 815,947.88-1,124,995.60-543,418.28

Finding the Fourth Proportional to 815,947.88, 1,124,995.60 and 543,418.28

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Solution

The fourth proportional to 815,947.88, 1,124,995.60 and 543,418.28 is: 749,242.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,947.88 : 1,124,995.60 = 543,418.28 : x
  2. Step 2: Convert to fraction form
    815,947.88/1,124,995.60 = 543,418.28/x
  3. Step 3: Cross multiply
    815,947.88x = 1,124,995.60 × 543,418.28
  4. Step 4: Simplify right side
    815,947.88x = 611,343,173,959.57
  5. Step 5: Solve for x
    x = 611,343,173,959.57/815,947.88
  6. Step 6: Final answer
    x = 749,242.92

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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.