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Finding the Fourth Proportional to 665,383.20, 998,074.80 and 547,285.20

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Solution

The fourth proportional to 665,383.20, 998,074.80 and 547,285.20 is: 820,927.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,383.20 : 998,074.80 = 547,285.20 : x
  2. Step 2: Convert to fraction form
    665,383.20/998,074.80 = 547,285.20/x
  3. Step 3: Cross multiply
    665,383.20x = 998,074.80 × 547,285.20
  4. Step 4: Simplify right side
    665,383.20x = 546,231,566,532.96
  5. Step 5: Solve for x
    x = 546,231,566,532.96/665,383.20
  6. Step 6: Final answer
    x = 820,927.80

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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.