Home / 811,972.88-1,120,627.26-489,856.94

Finding the Fourth Proportional to 811,972.88, 1,120,627.26 and 489,856.94

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Solution

The fourth proportional to 811,972.88, 1,120,627.26 and 489,856.94 is: 676,065.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,972.88 : 1,120,627.26 = 489,856.94 : x
  2. Step 2: Convert to fraction form
    811,972.88/1,120,627.26 = 489,856.94/x
  3. Step 3: Cross multiply
    811,972.88x = 1,120,627.26 × 489,856.94
  4. Step 4: Simplify right side
    811,972.88x = 548,947,040,464.18
  5. Step 5: Solve for x
    x = 548,947,040,464.18/811,972.88
  6. Step 6: Final answer
    x = 676,065.73

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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.