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Finding the Fourth Proportional to 890,514.03, 1,334,978.23 and 321,768.28

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Solution

The fourth proportional to 890,514.03, 1,334,978.23 and 321,768.28 is: 482,365.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,514.03 : 1,334,978.23 = 321,768.28 : x
  2. Step 2: Convert to fraction form
    890,514.03/1,334,978.23 = 321,768.28/x
  3. Step 3: Cross multiply
    890,514.03x = 1,334,978.23 × 321,768.28
  4. Step 4: Simplify right side
    890,514.03x = 429,553,648,904.54
  5. Step 5: Solve for x
    x = 429,553,648,904.54/890,514.03
  6. Step 6: Final answer
    x = 482,365.95

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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.