Home / 860,867.70-1,291,301.55-261,824.10

Finding the Fourth Proportional to 860,867.70, 1,291,301.55 and 261,824.10

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Solution

The fourth proportional to 860,867.70, 1,291,301.55 and 261,824.10 is: 392,736.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,867.70 : 1,291,301.55 = 261,824.10 : x
  2. Step 2: Convert to fraction form
    860,867.70/1,291,301.55 = 261,824.10/x
  3. Step 3: Cross multiply
    860,867.70x = 1,291,301.55 × 261,824.10
  4. Step 4: Simplify right side
    860,867.70x = 338,093,866,157.36
  5. Step 5: Solve for x
    x = 338,093,866,157.36/860,867.70
  6. Step 6: Final answer
    x = 392,736.15

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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.