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Finding the Fourth Proportional to 819,792.80, 1,131,401.04 and 480,546.08

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Solution

The fourth proportional to 819,792.80, 1,131,401.04 and 480,546.08 is: 663,204.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,792.80 : 1,131,401.04 = 480,546.08 : x
  2. Step 2: Convert to fraction form
    819,792.80/1,131,401.04 = 480,546.08/x
  3. Step 3: Cross multiply
    819,792.80x = 1,131,401.04 × 480,546.08
  4. Step 4: Simplify right side
    819,792.80x = 543,690,334,679.92
  5. Step 5: Solve for x
    x = 543,690,334,679.92/819,792.80
  6. Step 6: Final answer
    x = 663,204.57

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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.