Home / 991,221.56-1,367,892.30-538,512.44

Finding the Fourth Proportional to 991,221.56, 1,367,892.30 and 538,512.44

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Solution

The fourth proportional to 991,221.56, 1,367,892.30 and 538,512.44 is: 743,150.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,221.56 : 1,367,892.30 = 538,512.44 : x
  2. Step 2: Convert to fraction form
    991,221.56/1,367,892.30 = 538,512.44/x
  3. Step 3: Cross multiply
    991,221.56x = 1,367,892.30 × 538,512.44
  4. Step 4: Simplify right side
    991,221.56x = 736,627,020,130.21
  5. Step 5: Solve for x
    x = 736,627,020,130.21/991,221.56
  6. Step 6: Final answer
    x = 743,150.72

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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.