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Finding the Fourth Proportional to 891,168.64, 1,229,796.64 and 503,977.92

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Solution

The fourth proportional to 891,168.64, 1,229,796.64 and 503,977.92 is: 695,480.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,168.64 : 1,229,796.64 = 503,977.92 : x
  2. Step 2: Convert to fraction form
    891,168.64/1,229,796.64 = 503,977.92/x
  3. Step 3: Cross multiply
    891,168.64x = 1,229,796.64 × 503,977.92
  4. Step 4: Simplify right side
    891,168.64x = 619,790,352,650.19
  5. Step 5: Solve for x
    x = 619,790,352,650.19/891,168.64
  6. Step 6: Final answer
    x = 695,480.43

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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.