Home / 991,370.43-1,368,087.84-561,732.48

Finding the Fourth Proportional to 991,370.43, 1,368,087.84 and 561,732.48

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Solution

The fourth proportional to 991,370.43, 1,368,087.84 and 561,732.48 is: 775,188.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,370.43 : 1,368,087.84 = 561,732.48 : x
  2. Step 2: Convert to fraction form
    991,370.43/1,368,087.84 = 561,732.48/x
  3. Step 3: Cross multiply
    991,370.43x = 1,368,087.84 × 561,732.48
  4. Step 4: Simplify right side
    991,370.43x = 768,499,375,221.04
  5. Step 5: Solve for x
    x = 768,499,375,221.04/991,370.43
  6. Step 6: Final answer
    x = 775,188.92

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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.