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Finding the Fourth Proportional to 891,074, 1,229,682.12 and 488,666

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Solution

The fourth proportional to 891,074, 1,229,682.12 and 488,666 is: 674,359.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,074 : 1,229,682.12 = 488,666 : x
  2. Step 2: Convert to fraction form
    891,074/1,229,682.12 = 488,666/x
  3. Step 3: Cross multiply
    891,074x = 1,229,682.12 × 488,666
  4. Step 4: Simplify right side
    891,074x = 600,903,842,851.92
  5. Step 5: Solve for x
    x = 600,903,842,851.92/891,074
  6. Step 6: Final answer
    x = 674,359.08

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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.