Home / 7,128,167.20-10,692,660.40-2,080,256.80

Finding the Fourth Proportional to 7,128,167.20, 10,692,660.40 and 2,080,256.80

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Solution

The fourth proportional to 7,128,167.20, 10,692,660.40 and 2,080,256.80 is: 3,120,504.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,167.20 : 10,692,660.40 = 2,080,256.80 : x
  2. Step 2: Convert to fraction form
    7,128,167.20/10,692,660.40 = 2,080,256.80/x
  3. Step 3: Cross multiply
    7,128,167.20x = 10,692,660.40 × 2,080,256.80
  4. Step 4: Simplify right side
    7,128,167.20x = 22,243,479,507,190.72
  5. Step 5: Solve for x
    x = 22,243,479,507,190.72/7,128,167.20
  6. Step 6: Final answer
    x = 3,120,504.74

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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.