Home / 1,086,467.40-1,629,701.10-287,872.20

Finding the Fourth Proportional to 1,086,467.40, 1,629,701.10 and 287,872.20

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Solution

The fourth proportional to 1,086,467.40, 1,629,701.10 and 287,872.20 is: 431,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,467.40 : 1,629,701.10 = 287,872.20 : x
  2. Step 2: Convert to fraction form
    1,086,467.40/1,629,701.10 = 287,872.20/x
  3. Step 3: Cross multiply
    1,086,467.40x = 1,629,701.10 × 287,872.20
  4. Step 4: Simplify right side
    1,086,467.40x = 469,145,640,999.42
  5. Step 5: Solve for x
    x = 469,145,640,999.42/1,086,467.40
  6. Step 6: Final answer
    x = 431,808.30

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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.