Home / 1,221,044.53-1,685,142.33-677,355.61

Finding the Fourth Proportional to 1,221,044.53, 1,685,142.33 and 677,355.61

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Solution

The fourth proportional to 1,221,044.53, 1,685,142.33 and 677,355.61 is: 934,806.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,044.53 : 1,685,142.33 = 677,355.61 : x
  2. Step 2: Convert to fraction form
    1,221,044.53/1,685,142.33 = 677,355.61/x
  3. Step 3: Cross multiply
    1,221,044.53x = 1,685,142.33 × 677,355.61
  4. Step 4: Simplify right side
    1,221,044.53x = 1,141,440,610,873.97
  5. Step 5: Solve for x
    x = 1,141,440,610,873.97/1,221,044.53
  6. Step 6: Final answer
    x = 934,806.70

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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.