Home / 991,400.52-1,368,141.06-538,691.56

Finding the Fourth Proportional to 991,400.52, 1,368,141.06 and 538,691.56

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Solution

The fourth proportional to 991,400.52, 1,368,141.06 and 538,691.56 is: 743,398.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,400.52 : 1,368,141.06 = 538,691.56 : x
  2. Step 2: Convert to fraction form
    991,400.52/1,368,141.06 = 538,691.56/x
  3. Step 3: Cross multiply
    991,400.52x = 1,368,141.06 × 538,691.56
  4. Step 4: Simplify right side
    991,400.52x = 737,006,041,911.45
  5. Step 5: Solve for x
    x = 737,006,041,911.45/991,400.52
  6. Step 6: Final answer
    x = 743,398.89

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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.