Home / 991,435.32-1,368,188.94-538,726.32

Finding the Fourth Proportional to 991,435.32, 1,368,188.94 and 538,726.32

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Solution

The fourth proportional to 991,435.32, 1,368,188.94 and 538,726.32 is: 743,446.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,435.32 : 1,368,188.94 = 538,726.32 : x
  2. Step 2: Convert to fraction form
    991,435.32/1,368,188.94 = 538,726.32/x
  3. Step 3: Cross multiply
    991,435.32x = 1,368,188.94 × 538,726.32
  4. Step 4: Simplify right side
    991,435.32x = 737,079,392,710.90
  5. Step 5: Solve for x
    x = 737,079,392,710.90/991,435.32
  6. Step 6: Final answer
    x = 743,446.78

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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.