Home / 991,420.22-1,368,168.56-538,711.22

Finding the Fourth Proportional to 991,420.22, 1,368,168.56 and 538,711.22

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Solution

The fourth proportional to 991,420.22, 1,368,168.56 and 538,711.22 is: 743,426.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,420.22 : 1,368,168.56 = 538,711.22 : x
  2. Step 2: Convert to fraction form
    991,420.22/1,368,168.56 = 538,711.22/x
  3. Step 3: Cross multiply
    991,420.22x = 1,368,168.56 × 538,711.22
  4. Step 4: Simplify right side
    991,420.22x = 737,047,754,123.24
  5. Step 5: Solve for x
    x = 737,047,754,123.24/991,420.22
  6. Step 6: Final answer
    x = 743,426.19

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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.