Home / 753,693.90-1,129,556.70-543,085.80

Finding the Fourth Proportional to 753,693.90, 1,129,556.70 and 543,085.80

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Solution

The fourth proportional to 753,693.90, 1,129,556.70 and 543,085.80 is: 813,919.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,693.90 : 1,129,556.70 = 543,085.80 : x
  2. Step 2: Convert to fraction form
    753,693.90/1,129,556.70 = 543,085.80/x
  3. Step 3: Cross multiply
    753,693.90x = 1,129,556.70 × 543,085.80
  4. Step 4: Simplify right side
    753,693.90x = 613,446,204,064.86
  5. Step 5: Solve for x
    x = 613,446,204,064.86/753,693.90
  6. Step 6: Final answer
    x = 813,919.56

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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.