Home / 1,152,129.20-1,728,193.80-451,713.20

Finding the Fourth Proportional to 1,152,129.20, 1,728,193.80 and 451,713.20

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Solution

The fourth proportional to 1,152,129.20, 1,728,193.80 and 451,713.20 is: 677,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,129.20 : 1,728,193.80 = 451,713.20 : x
  2. Step 2: Convert to fraction form
    1,152,129.20/1,728,193.80 = 451,713.20/x
  3. Step 3: Cross multiply
    1,152,129.20x = 1,728,193.80 × 451,713.20
  4. Step 4: Simplify right side
    1,152,129.20x = 780,647,951,618.16
  5. Step 5: Solve for x
    x = 780,647,951,618.16/1,152,129.20
  6. Step 6: Final answer
    x = 677,569.80

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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.