Home / 7,129,456.40-10,695,739.80-2,080,355.60

Finding the Fourth Proportional to 7,129,456.40, 10,695,739.80 and 2,080,355.60

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Solution

The fourth proportional to 7,129,456.40, 10,695,739.80 and 2,080,355.60 is: 3,120,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129,456.40 : 10,695,739.80 = 2,080,355.60 : x
  2. Step 2: Convert to fraction form
    7,129,456.40/10,695,739.80 = 2,080,355.60/x
  3. Step 3: Cross multiply
    7,129,456.40x = 10,695,739.80 × 2,080,355.60
  4. Step 4: Simplify right side
    7,129,456.40x = 22,250,942,189,072.88
  5. Step 5: Solve for x
    x = 22,250,942,189,072.88/7,129,456.40
  6. Step 6: Final answer
    x = 3,120,987.20

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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.