Home / 1,258,067.40-1,887,101.10-311,438.13

Finding the Fourth Proportional to 1,258,067.40, 1,887,101.10 and 311,438.13

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Solution

The fourth proportional to 1,258,067.40, 1,887,101.10 and 311,438.13 is: 467,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,067.40 : 1,887,101.10 = 311,438.13 : x
  2. Step 2: Convert to fraction form
    1,258,067.40/1,887,101.10 = 311,438.13/x
  3. Step 3: Cross multiply
    1,258,067.40x = 1,887,101.10 × 311,438.13
  4. Step 4: Simplify right side
    1,258,067.40x = 587,715,237,704.94
  5. Step 5: Solve for x
    x = 587,715,237,704.94/1,258,067.40
  6. Step 6: Final answer
    x = 467,157.20

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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.