Home / 2,086,128.80-3,126,860.40-1,188,000.80

Finding the Fourth Proportional to 2,086,128.80, 3,126,860.40 and 1,188,000.80

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Solution

The fourth proportional to 2,086,128.80, 3,126,860.40 and 1,188,000.80 is: 1,780,672.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086,128.80 : 3,126,860.40 = 1,188,000.80 : x
  2. Step 2: Convert to fraction form
    2,086,128.80/3,126,860.40 = 1,188,000.80/x
  3. Step 3: Cross multiply
    2,086,128.80x = 3,126,860.40 × 1,188,000.80
  4. Step 4: Simplify right side
    2,086,128.80x = 3,714,712,656,688.32
  5. Step 5: Solve for x
    x = 3,714,712,656,688.32/2,086,128.80
  6. Step 6: Final answer
    x = 1,780,672.73

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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.