Home / 1,121,190.30-1,680,785.55-411,052.86

Finding the Fourth Proportional to 1,121,190.30, 1,680,785.55 and 411,052.86

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Solution

The fourth proportional to 1,121,190.30, 1,680,785.55 and 411,052.86 is: 616,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,190.30 : 1,680,785.55 = 411,052.86 : x
  2. Step 2: Convert to fraction form
    1,121,190.30/1,680,785.55 = 411,052.86/x
  3. Step 3: Cross multiply
    1,121,190.30x = 1,680,785.55 × 411,052.86
  4. Step 4: Simplify right side
    1,121,190.30x = 690,891,707,374.17
  5. Step 5: Solve for x
    x = 690,891,707,374.17/1,121,190.30
  6. Step 6: Final answer
    x = 616,212.70

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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.