Home / 1,120,249.80-1,680,374.70-321,557.40

Finding the Fourth Proportional to 1,120,249.80, 1,680,374.70 and 321,557.40

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Solution

The fourth proportional to 1,120,249.80, 1,680,374.70 and 321,557.40 is: 482,336.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,249.80 : 1,680,374.70 = 321,557.40 : x
  2. Step 2: Convert to fraction form
    1,120,249.80/1,680,374.70 = 321,557.40/x
  3. Step 3: Cross multiply
    1,120,249.80x = 1,680,374.70 × 321,557.40
  4. Step 4: Simplify right side
    1,120,249.80x = 540,336,919,557.78
  5. Step 5: Solve for x
    x = 540,336,919,557.78/1,120,249.80
  6. Step 6: Final answer
    x = 482,336.10

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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.