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Finding the Fourth Proportional to 528,066.20, 792,002.10 and 328,028.60

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Solution

The fourth proportional to 528,066.20, 792,002.10 and 328,028.60 is: 491,982.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,066.20 : 792,002.10 = 328,028.60 : x
  2. Step 2: Convert to fraction form
    528,066.20/792,002.10 = 328,028.60/x
  3. Step 3: Cross multiply
    528,066.20x = 792,002.10 × 328,028.60
  4. Step 4: Simplify right side
    528,066.20x = 259,799,340,060.06
  5. Step 5: Solve for x
    x = 259,799,340,060.06/528,066.20
  6. Step 6: Final answer
    x = 491,982.52

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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.