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Finding the Fourth Proportional to 890,983, 1,229,556.78 and 488,583.64

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Solution

The fourth proportional to 890,983, 1,229,556.78 and 488,583.64 is: 674,245.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,983 : 1,229,556.78 = 488,583.64 : x
  2. Step 2: Convert to fraction form
    890,983/1,229,556.78 = 488,583.64/x
  3. Step 3: Cross multiply
    890,983x = 1,229,556.78 × 488,583.64
  4. Step 4: Simplify right side
    890,983x = 600,741,327,159.08
  5. Step 5: Solve for x
    x = 600,741,327,159.08/890,983
  6. Step 6: Final answer
    x = 674,245.55

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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.