Home / 1,126,356.44-1,554,138.92-643,078.85

Finding the Fourth Proportional to 1,126,356.44, 1,554,138.92 and 643,078.85

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Solution

The fourth proportional to 1,126,356.44, 1,554,138.92 and 643,078.85 is: 887,315.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,356.44 : 1,554,138.92 = 643,078.85 : x
  2. Step 2: Convert to fraction form
    1,126,356.44/1,554,138.92 = 643,078.85/x
  3. Step 3: Cross multiply
    1,126,356.44x = 1,554,138.92 × 643,078.85
  4. Step 4: Simplify right side
    1,126,356.44x = 999,433,866,198.45
  5. Step 5: Solve for x
    x = 999,433,866,198.45/1,126,356.44
  6. Step 6: Final answer
    x = 887,315.80

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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.