Home / 7,182,761.78-9,912,422.09-3,919,787.11

Finding the Fourth Proportional to 7,182,761.78, 9,912,422.09 and 3,919,787.11

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Solution

The fourth proportional to 7,182,761.78, 9,912,422.09 and 3,919,787.11 is: 5,409,421.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182,761.78 : 9,912,422.09 = 3,919,787.11 : x
  2. Step 2: Convert to fraction form
    7,182,761.78/9,912,422.09 = 3,919,787.11/x
  3. Step 3: Cross multiply
    7,182,761.78x = 9,912,422.09 × 3,919,787.11
  4. Step 4: Simplify right side
    7,182,761.78x = 38,854,584,268,100.22
  5. Step 5: Solve for x
    x = 38,854,584,268,100.22/7,182,761.78
  6. Step 6: Final answer
    x = 5,409,421.26

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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.