Home / 1,278,255.27-1,917,380.46-745,402.65

Finding the Fourth Proportional to 1,278,255.27, 1,917,380.46 and 745,402.65

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Solution

The fourth proportional to 1,278,255.27, 1,917,380.46 and 745,402.65 is: 1,118,102.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,255.27 : 1,917,380.46 = 745,402.65 : x
  2. Step 2: Convert to fraction form
    1,278,255.27/1,917,380.46 = 745,402.65/x
  3. Step 3: Cross multiply
    1,278,255.27x = 1,917,380.46 × 745,402.65
  4. Step 4: Simplify right side
    1,278,255.27x = 1,429,220,475,942.22
  5. Step 5: Solve for x
    x = 1,429,220,475,942.22/1,278,255.27
  6. Step 6: Final answer
    x = 1,118,102.55

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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.