Home / 991,388.68-1,368,128.82-538,687.24

Finding the Fourth Proportional to 991,388.68, 1,368,128.82 and 538,687.24

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Solution

The fourth proportional to 991,388.68, 1,368,128.82 and 538,687.24 is: 743,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,388.68 : 1,368,128.82 = 538,687.24 : x
  2. Step 2: Convert to fraction form
    991,388.68/1,368,128.82 = 538,687.24/x
  3. Step 3: Cross multiply
    991,388.68x = 1,368,128.82 × 538,687.24
  4. Step 4: Simplify right side
    991,388.68x = 736,993,538,010.26
  5. Step 5: Solve for x
    x = 736,993,538,010.26/991,388.68
  6. Step 6: Final answer
    x = 743,395.15

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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.