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Finding the Fourth Proportional to 819,522.80, 1,230,282.60 and 520,002.80

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Solution

The fourth proportional to 819,522.80, 1,230,282.60 and 520,002.80 is: 780,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,522.80 : 1,230,282.60 = 520,002.80 : x
  2. Step 2: Convert to fraction form
    819,522.80/1,230,282.60 = 520,002.80/x
  3. Step 3: Cross multiply
    819,522.80x = 1,230,282.60 × 520,002.80
  4. Step 4: Simplify right side
    819,522.80x = 639,750,396,791.28
  5. Step 5: Solve for x
    x = 639,750,396,791.28/819,522.80
  6. Step 6: Final answer
    x = 780,637.70

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1.5x scale

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.