Home / 484,515.50-668,778.36-280,616.53

Finding the Fourth Proportional to 484,515.50, 668,778.36 and 280,616.53

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Solution

The fourth proportional to 484,515.50, 668,778.36 and 280,616.53 is: 387,335.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,515.50 : 668,778.36 = 280,616.53 : x
  2. Step 2: Convert to fraction form
    484,515.50/668,778.36 = 280,616.53/x
  3. Step 3: Cross multiply
    484,515.50x = 668,778.36 × 280,616.53
  4. Step 4: Simplify right side
    484,515.50x = 187,670,265,674.90
  5. Step 5: Solve for x
    x = 187,670,265,674.90/484,515.50
  6. Step 6: Final answer
    x = 387,335.94

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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.