Home / 2,186,139.80-3,279,209.70-1,286,658.20

Finding the Fourth Proportional to 2,186,139.80, 3,279,209.70 and 1,286,658.20

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Solution

The fourth proportional to 2,186,139.80, 3,279,209.70 and 1,286,658.20 is: 1,929,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186,139.80 : 3,279,209.70 = 1,286,658.20 : x
  2. Step 2: Convert to fraction form
    2,186,139.80/3,279,209.70 = 1,286,658.20/x
  3. Step 3: Cross multiply
    2,186,139.80x = 3,279,209.70 × 1,286,658.20
  4. Step 4: Simplify right side
    2,186,139.80x = 4,219,222,050,024.54
  5. Step 5: Solve for x
    x = 4,219,222,050,024.54/2,186,139.80
  6. Step 6: Final answer
    x = 1,929,987.30

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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.