Home / 1,428,169.90-1,970,874.30-816,335.73

Finding the Fourth Proportional to 1,428,169.90, 1,970,874.30 and 816,335.73

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Solution

The fourth proportional to 1,428,169.90, 1,970,874.30 and 816,335.73 is: 1,126,543.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,169.90 : 1,970,874.30 = 816,335.73 : x
  2. Step 2: Convert to fraction form
    1,428,169.90/1,970,874.30 = 816,335.73/x
  3. Step 3: Cross multiply
    1,428,169.90x = 1,970,874.30 × 816,335.73
  4. Step 4: Simplify right side
    1,428,169.90x = 1,608,895,110,428.74
  5. Step 5: Solve for x
    x = 1,608,895,110,428.74/1,428,169.90
  6. Step 6: Final answer
    x = 1,126,543.21

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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.