Home / 7,128,205.20-10,694,755.80-2,080,256.40

Finding the Fourth Proportional to 7,128,205.20, 10,694,755.80 and 2,080,256.40

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Solution

The fourth proportional to 7,128,205.20, 10,694,755.80 and 2,080,256.40 is: 3,121,099.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,205.20 : 10,694,755.80 = 2,080,256.40 : x
  2. Step 2: Convert to fraction form
    7,128,205.20/10,694,755.80 = 2,080,256.40/x
  3. Step 3: Cross multiply
    7,128,205.20x = 10,694,755.80 × 2,080,256.40
  4. Step 4: Simplify right side
    7,128,205.20x = 22,247,834,199,387.12
  5. Step 5: Solve for x
    x = 22,247,834,199,387.12/7,128,205.20
  6. Step 6: Final answer
    x = 3,121,099.01

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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.