Home / 9,129,780-12,598,942.40-5,055,311.52

Finding the Fourth Proportional to 9,129,780, 12,598,942.40 and 5,055,311.52

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Solution

The fourth proportional to 9,129,780, 12,598,942.40 and 5,055,311.52 is: 6,976,244.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129,780 : 12,598,942.40 = 5,055,311.52 : x
  2. Step 2: Convert to fraction form
    9,129,780/12,598,942.40 = 5,055,311.52/x
  3. Step 3: Cross multiply
    9,129,780x = 12,598,942.40 × 5,055,311.52
  4. Step 4: Simplify right side
    9,129,780x = 63,691,578,654,536.45
  5. Step 5: Solve for x
    x = 63,691,578,654,536.45/9,129,780
  6. Step 6: Final answer
    x = 6,976,244.63

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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.