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Finding the Fourth Proportional to 522,199.40, 720,871.30 and 328,891.20

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Solution

The fourth proportional to 522,199.40, 720,871.30 and 328,891.20 is: 454,018.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,199.40 : 720,871.30 = 328,891.20 : x
  2. Step 2: Convert to fraction form
    522,199.40/720,871.30 = 328,891.20/x
  3. Step 3: Cross multiply
    522,199.40x = 720,871.30 × 328,891.20
  4. Step 4: Simplify right side
    522,199.40x = 237,088,228,202.80
  5. Step 5: Solve for x
    x = 237,088,228,202.80/522,199.40
  6. Step 6: Final answer
    x = 454,018.58

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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.