Home / 1,099,735.92-1,517,610.78-640,821.78

Finding the Fourth Proportional to 1,099,735.92, 1,517,610.78 and 640,821.78

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Solution

The fourth proportional to 1,099,735.92, 1,517,610.78 and 640,821.78 is: 884,319.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,735.92 : 1,517,610.78 = 640,821.78 : x
  2. Step 2: Convert to fraction form
    1,099,735.92/1,517,610.78 = 640,821.78/x
  3. Step 3: Cross multiply
    1,099,735.92x = 1,517,610.78 × 640,821.78
  4. Step 4: Simplify right side
    1,099,735.92x = 972,518,041,386.79
  5. Step 5: Solve for x
    x = 972,518,041,386.79/1,099,735.92
  6. Step 6: Final answer
    x = 884,319.61

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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.