Home / 1,225,512.79-1,691,183.34-681,636.87

Finding the Fourth Proportional to 1,225,512.79, 1,691,183.34 and 681,636.87

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Solution

The fourth proportional to 1,225,512.79, 1,691,183.34 and 681,636.87 is: 940,645.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,512.79 : 1,691,183.34 = 681,636.87 : x
  2. Step 2: Convert to fraction form
    1,225,512.79/1,691,183.34 = 681,636.87/x
  3. Step 3: Cross multiply
    1,225,512.79x = 1,691,183.34 × 681,636.87
  4. Step 4: Simplify right side
    1,225,512.79x = 1,152,772,918,473.75
  5. Step 5: Solve for x
    x = 1,152,772,918,473.75/1,225,512.79
  6. Step 6: Final answer
    x = 940,645.36

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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.