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Finding the Fourth Proportional to 585,469.90, 807,927.78 and 330,815.62

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Solution

The fourth proportional to 585,469.90, 807,927.78 and 330,815.62 is: 456,513.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,469.90 : 807,927.78 = 330,815.62 : x
  2. Step 2: Convert to fraction form
    585,469.90/807,927.78 = 330,815.62/x
  3. Step 3: Cross multiply
    585,469.90x = 807,927.78 × 330,815.62
  4. Step 4: Simplify right side
    585,469.90x = 267,275,129,455.92
  5. Step 5: Solve for x
    x = 267,275,129,455.92/585,469.90
  6. Step 6: Final answer
    x = 456,513.87

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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.