Home / 1,189,520-1,641,518.16-680,204.96

Finding the Fourth Proportional to 1,189,520, 1,641,518.16 and 680,204.96

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Solution

The fourth proportional to 1,189,520, 1,641,518.16 and 680,204.96 is: 938,671.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,520 : 1,641,518.16 = 680,204.96 : x
  2. Step 2: Convert to fraction form
    1,189,520/1,641,518.16 = 680,204.96/x
  3. Step 3: Cross multiply
    1,189,520x = 1,641,518.16 × 680,204.96
  4. Step 4: Simplify right side
    1,189,520x = 1,116,568,794,362.07
  5. Step 5: Solve for x
    x = 1,116,568,794,362.07/1,189,520
  6. Step 6: Final answer
    x = 938,671.73

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Double scale
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1.5x scale

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.