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Finding the Fourth Proportional to 488,563.76, 674,023.88 and 304,694.16

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Solution

The fourth proportional to 488,563.76, 674,023.88 and 304,694.16 is: 420,356.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,563.76 : 674,023.88 = 304,694.16 : x
  2. Step 2: Convert to fraction form
    488,563.76/674,023.88 = 304,694.16/x
  3. Step 3: Cross multiply
    488,563.76x = 674,023.88 × 304,694.16
  4. Step 4: Simplify right side
    488,563.76x = 205,371,139,936.54
  5. Step 5: Solve for x
    x = 205,371,139,936.54/488,563.76
  6. Step 6: Final answer
    x = 420,356.88

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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.