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Finding the Fourth Proportional to 859,135.22, 1,288,209 and 354,044.90

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Solution

The fourth proportional to 859,135.22, 1,288,209 and 354,044.90 is: 530,863.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,135.22 : 1,288,209 = 354,044.90 : x
  2. Step 2: Convert to fraction form
    859,135.22/1,288,209 = 354,044.90/x
  3. Step 3: Cross multiply
    859,135.22x = 1,288,209 × 354,044.90
  4. Step 4: Simplify right side
    859,135.22x = 456,083,826,584.10
  5. Step 5: Solve for x
    x = 456,083,826,584.10/859,135.22
  6. Step 6: Final answer
    x = 530,863.85

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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.