Home / 1,221,042.53-1,685,139.57-677,353.61

Finding the Fourth Proportional to 1,221,042.53, 1,685,139.57 and 677,353.61

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Solution

The fourth proportional to 1,221,042.53, 1,685,139.57 and 677,353.61 is: 934,803.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,042.53 : 1,685,139.57 = 677,353.61 : x
  2. Step 2: Convert to fraction form
    1,221,042.53/1,685,139.57 = 677,353.61/x
  3. Step 3: Cross multiply
    1,221,042.53x = 1,685,139.57 × 677,353.61
  4. Step 4: Simplify right side
    1,221,042.53x = 1,141,435,375,306.20
  5. Step 5: Solve for x
    x = 1,141,435,375,306.20/1,221,042.53
  6. Step 6: Final answer
    x = 934,803.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.