Home / 991,429.88-1,368,181.43-538,720.88

Finding the Fourth Proportional to 991,429.88, 1,368,181.43 and 538,720.88

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Solution

The fourth proportional to 991,429.88, 1,368,181.43 and 538,720.88 is: 743,439.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,429.88 : 1,368,181.43 = 538,720.88 : x
  2. Step 2: Convert to fraction form
    991,429.88/1,368,181.43 = 538,720.88/x
  3. Step 3: Cross multiply
    991,429.88x = 1,368,181.43 × 538,720.88
  4. Step 4: Simplify right side
    991,429.88x = 737,067,896,454.95
  5. Step 5: Solve for x
    x = 737,067,896,454.95/991,429.88
  6. Step 6: Final answer
    x = 743,439.26

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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.