Home / 7,128,131.70-10,692,607.15-2,080,221.30

Finding the Fourth Proportional to 7,128,131.70, 10,692,607.15 and 2,080,221.30

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Solution

The fourth proportional to 7,128,131.70, 10,692,607.15 and 2,080,221.30 is: 3,120,451.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128,131.70 : 10,692,607.15 = 2,080,221.30 : x
  2. Step 2: Convert to fraction form
    7,128,131.70/10,692,607.15 = 2,080,221.30/x
  3. Step 3: Cross multiply
    7,128,131.70x = 10,692,607.15 × 2,080,221.30
  4. Step 4: Simplify right side
    7,128,131.70x = 22,242,989,145,962.30
  5. Step 5: Solve for x
    x = 22,242,989,145,962.30/7,128,131.70
  6. Step 6: Final answer
    x = 3,120,451.48

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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.