Home / 1,245,126.20-1,867,689.30-1,098,159.80

Finding the Fourth Proportional to 1,245,126.20, 1,867,689.30 and 1,098,159.80

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Solution

The fourth proportional to 1,245,126.20, 1,867,689.30 and 1,098,159.80 is: 1,647,239.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,126.20 : 1,867,689.30 = 1,098,159.80 : x
  2. Step 2: Convert to fraction form
    1,245,126.20/1,867,689.30 = 1,098,159.80/x
  3. Step 3: Cross multiply
    1,245,126.20x = 1,867,689.30 × 1,098,159.80
  4. Step 4: Simplify right side
    1,245,126.20x = 2,051,021,308,150.14
  5. Step 5: Solve for x
    x = 2,051,021,308,150.14/1,245,126.20
  6. Step 6: Final answer
    x = 1,647,239.70

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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.