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Finding the Fourth Proportional to 890,751.78, 1,335,866.45 and 251,012.97

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Solution

The fourth proportional to 890,751.78, 1,335,866.45 and 251,012.97 is: 376,445.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,751.78 : 1,335,866.45 = 251,012.97 : x
  2. Step 2: Convert to fraction form
    890,751.78/1,335,866.45 = 251,012.97/x
  3. Step 3: Cross multiply
    890,751.78x = 1,335,866.45 × 251,012.97
  4. Step 4: Simplify right side
    890,751.78x = 335,319,803,882.79
  5. Step 5: Solve for x
    x = 335,319,803,882.79/890,751.78
  6. Step 6: Final answer
    x = 376,445.84

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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.