Home / 859,092.40-1,288,638.60-720,161.20

Finding the Fourth Proportional to 859,092.40, 1,288,638.60 and 720,161.20

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Solution

The fourth proportional to 859,092.40, 1,288,638.60 and 720,161.20 is: 1,080,241.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,092.40 : 1,288,638.60 = 720,161.20 : x
  2. Step 2: Convert to fraction form
    859,092.40/1,288,638.60 = 720,161.20/x
  3. Step 3: Cross multiply
    859,092.40x = 1,288,638.60 × 720,161.20
  4. Step 4: Simplify right side
    859,092.40x = 928,027,520,542.32
  5. Step 5: Solve for x
    x = 928,027,520,542.32/859,092.40
  6. Step 6: Final answer
    x = 1,080,241.80

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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.