Home / 1,186,221.32-1,779,331.39-287,662.90

Finding the Fourth Proportional to 1,186,221.32, 1,779,331.39 and 287,662.90

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Solution

The fourth proportional to 1,186,221.32, 1,779,331.39 and 287,662.90 is: 431,494.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,221.32 : 1,779,331.39 = 287,662.90 : x
  2. Step 2: Convert to fraction form
    1,186,221.32/1,779,331.39 = 287,662.90/x
  3. Step 3: Cross multiply
    1,186,221.32x = 1,779,331.39 × 287,662.90
  4. Step 4: Simplify right side
    1,186,221.32x = 511,847,627,708.43
  5. Step 5: Solve for x
    x = 511,847,627,708.43/1,186,221.32
  6. Step 6: Final answer
    x = 431,494.21

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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.