Home / 543,947.20-815,726.40-188,972.80

Finding the Fourth Proportional to 543,947.20, 815,726.40 and 188,972.80

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Solution

The fourth proportional to 543,947.20, 815,726.40 and 188,972.80 is: 283,391.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,947.20 : 815,726.40 = 188,972.80 : x
  2. Step 2: Convert to fraction form
    543,947.20/815,726.40 = 188,972.80/x
  3. Step 3: Cross multiply
    543,947.20x = 815,726.40 × 188,972.80
  4. Step 4: Simplify right side
    543,947.20x = 154,150,101,841.92
  5. Step 5: Solve for x
    x = 154,150,101,841.92/543,947.20
  6. Step 6: Final answer
    x = 283,391.66

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1.5x scale

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.