Home / 913,690.50-1,261,464.84-587,135.76

Finding the Fourth Proportional to 913,690.50, 1,261,464.84 and 587,135.76

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Solution

The fourth proportional to 913,690.50, 1,261,464.84 and 587,135.76 is: 810,614.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,690.50 : 1,261,464.84 = 587,135.76 : x
  2. Step 2: Convert to fraction form
    913,690.50/1,261,464.84 = 587,135.76/x
  3. Step 3: Cross multiply
    913,690.50x = 1,261,464.84 × 587,135.76
  4. Step 4: Simplify right side
    913,690.50x = 740,651,117,546.68
  5. Step 5: Solve for x
    x = 740,651,117,546.68/913,690.50
  6. Step 6: Final answer
    x = 810,614.88

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Double scale
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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.