Home / 1,189,175.86-1,641,067.14-645,311.76

Finding the Fourth Proportional to 1,189,175.86, 1,641,067.14 and 645,311.76

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Solution

The fourth proportional to 1,189,175.86, 1,641,067.14 and 645,311.76 is: 890,532.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,175.86 : 1,641,067.14 = 645,311.76 : x
  2. Step 2: Convert to fraction form
    1,189,175.86/1,641,067.14 = 645,311.76/x
  3. Step 3: Cross multiply
    1,189,175.86x = 1,641,067.14 × 645,311.76
  4. Step 4: Simplify right side
    1,189,175.86x = 1,058,999,924,391.57
  5. Step 5: Solve for x
    x = 1,058,999,924,391.57/1,189,175.86
  6. Step 6: Final answer
    x = 890,532.65

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.