Home / 1,280,743.70-1,921,115.55-1,231,754.90

Finding the Fourth Proportional to 1,280,743.70, 1,921,115.55 and 1,231,754.90

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Solution

The fourth proportional to 1,280,743.70, 1,921,115.55 and 1,231,754.90 is: 1,847,632.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,743.70 : 1,921,115.55 = 1,231,754.90 : x
  2. Step 2: Convert to fraction form
    1,280,743.70/1,921,115.55 = 1,231,754.90/x
  3. Step 3: Cross multiply
    1,280,743.70x = 1,921,115.55 × 1,231,754.90
  4. Step 4: Simplify right side
    1,280,743.70x = 2,366,343,492,178.69
  5. Step 5: Solve for x
    x = 2,366,343,492,178.69/1,280,743.70
  6. Step 6: Final answer
    x = 1,847,632.35

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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.