Home / 766,409.87-1,057,645.91-444,306.69

Finding the Fourth Proportional to 766,409.87, 1,057,645.91 and 444,306.69

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Solution

The fourth proportional to 766,409.87, 1,057,645.91 and 444,306.69 is: 613,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,409.87 : 1,057,645.91 = 444,306.69 : x
  2. Step 2: Convert to fraction form
    766,409.87/1,057,645.91 = 444,306.69/x
  3. Step 3: Cross multiply
    766,409.87x = 1,057,645.91 × 444,306.69
  4. Step 4: Simplify right side
    766,409.87x = 469,919,153,464.14
  5. Step 5: Solve for x
    x = 469,919,153,464.14/766,409.87
  6. Step 6: Final answer
    x = 613,143.40

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Half scale
Find fourth proportional to 1,532,819.74, 2,115,291.82 and 888,613.38
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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.