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Finding the Fourth Proportional to 522,200.40, 720,872.68 and 328,892.20

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Solution

The fourth proportional to 522,200.40, 720,872.68 and 328,892.20 is: 454,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,200.40 : 720,872.68 = 328,892.20 : x
  2. Step 2: Convert to fraction form
    522,200.40/720,872.68 = 328,892.20/x
  3. Step 3: Cross multiply
    522,200.40x = 720,872.68 × 328,892.20
  4. Step 4: Simplify right side
    522,200.40x = 237,089,401,645.10
  5. Step 5: Solve for x
    x = 237,089,401,645.10/522,200.40
  6. Step 6: Final answer
    x = 454,019.95

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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.