Home / 991,426.20-1,368,176.82-538,717.20

Finding the Fourth Proportional to 991,426.20, 1,368,176.82 and 538,717.20

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Solution

The fourth proportional to 991,426.20, 1,368,176.82 and 538,717.20 is: 743,434.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,426.20 : 1,368,176.82 = 538,717.20 : x
  2. Step 2: Convert to fraction form
    991,426.20/1,368,176.82 = 538,717.20/x
  3. Step 3: Cross multiply
    991,426.20x = 1,368,176.82 × 538,717.20
  4. Step 4: Simplify right side
    991,426.20x = 737,060,385,575.30
  5. Step 5: Solve for x
    x = 737,060,385,575.30/991,426.20
  6. Step 6: Final answer
    x = 743,434.44

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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.