Home / 1,086,479.40-1,629,719.10-287,884.20

Finding the Fourth Proportional to 1,086,479.40, 1,629,719.10 and 287,884.20

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Solution

The fourth proportional to 1,086,479.40, 1,629,719.10 and 287,884.20 is: 431,826.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,479.40 : 1,629,719.10 = 287,884.20 : x
  2. Step 2: Convert to fraction form
    1,086,479.40/1,629,719.10 = 287,884.20/x
  3. Step 3: Cross multiply
    1,086,479.40x = 1,629,719.10 × 287,884.20
  4. Step 4: Simplify right side
    1,086,479.40x = 469,170,379,328.22
  5. Step 5: Solve for x
    x = 469,170,379,328.22/1,086,479.40
  6. Step 6: Final answer
    x = 431,826.30

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Double scale
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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.