Home / 663,721.20-995,581.80-545,623.20

Finding the Fourth Proportional to 663,721.20, 995,581.80 and 545,623.20

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Solution

The fourth proportional to 663,721.20, 995,581.80 and 545,623.20 is: 818,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,721.20 : 995,581.80 = 545,623.20 : x
  2. Step 2: Convert to fraction form
    663,721.20/995,581.80 = 545,623.20/x
  3. Step 3: Cross multiply
    663,721.20x = 995,581.80 × 545,623.20
  4. Step 4: Simplify right side
    663,721.20x = 543,212,527,577.76
  5. Step 5: Solve for x
    x = 543,212,527,577.76/663,721.20
  6. Step 6: Final answer
    x = 818,434.80

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Double scale
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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.