Home / 991,387.68-1,368,127.44-538,686.24

Finding the Fourth Proportional to 991,387.68, 1,368,127.44 and 538,686.24

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Solution

The fourth proportional to 991,387.68, 1,368,127.44 and 538,686.24 is: 743,393.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,387.68 : 1,368,127.44 = 538,686.24 : x
  2. Step 2: Convert to fraction form
    991,387.68/1,368,127.44 = 538,686.24/x
  3. Step 3: Cross multiply
    991,387.68x = 1,368,127.44 × 538,686.24
  4. Step 4: Simplify right side
    991,387.68x = 736,991,426,494.43
  5. Step 5: Solve for x
    x = 736,991,426,494.43/991,387.68
  6. Step 6: Final answer
    x = 743,393.77

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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.