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Finding the Fourth Proportional to 7,182,978.42, 10,765,110.92 and 2,918,160.75

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Solution

The fourth proportional to 7,182,978.42, 10,765,110.92 and 2,918,160.75 is: 4,373,439.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182,978.42 : 10,765,110.92 = 2,918,160.75 : x
  2. Step 2: Convert to fraction form
    7,182,978.42/10,765,110.92 = 2,918,160.75/x
  3. Step 3: Cross multiply
    7,182,978.42x = 10,765,110.92 × 2,918,160.75
  4. Step 4: Simplify right side
    7,182,978.42x = 31,414,324,141,549.58
  5. Step 5: Solve for x
    x = 31,414,324,141,549.58/7,182,978.42
  6. Step 6: Final answer
    x = 4,373,439.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.