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Finding the Fourth Proportional to 492,859.22, 680,016.47 and 288,800.57

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Solution

The fourth proportional to 492,859.22, 680,016.47 and 288,800.57 is: 398,469.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,859.22 : 680,016.47 = 288,800.57 : x
  2. Step 2: Convert to fraction form
    492,859.22/680,016.47 = 288,800.57/x
  3. Step 3: Cross multiply
    492,859.22x = 680,016.47 × 288,800.57
  4. Step 4: Simplify right side
    492,859.22x = 196,389,144,401.43
  5. Step 5: Solve for x
    x = 196,389,144,401.43/492,859.22
  6. Step 6: Final answer
    x = 398,469.05

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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.