Home / 805,540.80-1,207,274.40-489,662.40

Finding the Fourth Proportional to 805,540.80, 1,207,274.40 and 489,662.40

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Solution

The fourth proportional to 805,540.80, 1,207,274.40 and 489,662.40 is: 733,863.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,540.80 : 1,207,274.40 = 489,662.40 : x
  2. Step 2: Convert to fraction form
    805,540.80/1,207,274.40 = 489,662.40/x
  3. Step 3: Cross multiply
    805,540.80x = 1,207,274.40 × 489,662.40
  4. Step 4: Simplify right side
    805,540.80x = 591,156,880,162.56
  5. Step 5: Solve for x
    x = 591,156,880,162.56/805,540.80
  6. Step 6: Final answer
    x = 733,863.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.