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Finding the Fourth Proportional to 889,862.12, 1,334,782.04 and 215,949

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Solution

The fourth proportional to 889,862.12, 1,334,782.04 and 215,949 is: 323,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,862.12 : 1,334,782.04 = 215,949 : x
  2. Step 2: Convert to fraction form
    889,862.12/1,334,782.04 = 215,949/x
  3. Step 3: Cross multiply
    889,862.12x = 1,334,782.04 × 215,949
  4. Step 4: Simplify right side
    889,862.12x = 288,244,846,755.96
  5. Step 5: Solve for x
    x = 288,244,846,755.96/889,862.12
  6. Step 6: Final answer
    x = 323,920.80

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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.