Home / 998,453.80-1,497,680.70-620,540.20

Finding the Fourth Proportional to 998,453.80, 1,497,680.70 and 620,540.20

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Solution

The fourth proportional to 998,453.80, 1,497,680.70 and 620,540.20 is: 930,810.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,453.80 : 1,497,680.70 = 620,540.20 : x
  2. Step 2: Convert to fraction form
    998,453.80/1,497,680.70 = 620,540.20/x
  3. Step 3: Cross multiply
    998,453.80x = 1,497,680.70 × 620,540.20
  4. Step 4: Simplify right side
    998,453.80x = 929,371,081,114.14
  5. Step 5: Solve for x
    x = 929,371,081,114.14/998,453.80
  6. Step 6: Final answer
    x = 930,810.30

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Double scale
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Similar ratio
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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.