Home / 991,990.27-1,368,958.06-550,473.91

Finding the Fourth Proportional to 991,990.27, 1,368,958.06 and 550,473.91

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Solution

The fourth proportional to 991,990.27, 1,368,958.06 and 550,473.91 is: 759,660.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,990.27 : 1,368,958.06 = 550,473.91 : x
  2. Step 2: Convert to fraction form
    991,990.27/1,368,958.06 = 550,473.91/x
  3. Step 3: Cross multiply
    991,990.27x = 1,368,958.06 × 550,473.91
  4. Step 4: Simplify right side
    991,990.27x = 753,575,691,631.70
  5. Step 5: Solve for x
    x = 753,575,691,631.70/991,990.27
  6. Step 6: Final answer
    x = 759,660.37

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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.