Home / 10,780,438.40-16,170,657.60-7,174,512.80

Finding the Fourth Proportional to 10,780,438.40, 16,170,657.60 and 7,174,512.80

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Solution

The fourth proportional to 10,780,438.40, 16,170,657.60 and 7,174,512.80 is: 10,761,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780,438.40 : 16,170,657.60 = 7,174,512.80 : x
  2. Step 2: Convert to fraction form
    10,780,438.40/16,170,657.60 = 7,174,512.80/x
  3. Step 3: Cross multiply
    10,780,438.40x = 16,170,657.60 × 7,174,512.80
  4. Step 4: Simplify right side
    10,780,438.40x = 116,016,589,935,617.28
  5. Step 5: Solve for x
    x = 116,016,589,935,617.28/10,780,438.40
  6. Step 6: Final answer
    x = 10,761,769.20

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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.