Home / 1,086,475.40-1,629,713.10-287,880.20

Finding the Fourth Proportional to 1,086,475.40, 1,629,713.10 and 287,880.20

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Solution

The fourth proportional to 1,086,475.40, 1,629,713.10 and 287,880.20 is: 431,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,475.40 : 1,629,713.10 = 287,880.20 : x
  2. Step 2: Convert to fraction form
    1,086,475.40/1,629,713.10 = 287,880.20/x
  3. Step 3: Cross multiply
    1,086,475.40x = 1,629,713.10 × 287,880.20
  4. Step 4: Simplify right side
    1,086,475.40x = 469,162,133,170.62
  5. Step 5: Solve for x
    x = 469,162,133,170.62/1,086,475.40
  6. Step 6: Final answer
    x = 431,820.30

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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.