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Finding the Fourth Proportional to 720,658.20, 1,080,080.10 and 365,770.20

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Solution

The fourth proportional to 720,658.20, 1,080,080.10 and 365,770.20 is: 548,194.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,658.20 : 1,080,080.10 = 365,770.20 : x
  2. Step 2: Convert to fraction form
    720,658.20/1,080,080.10 = 365,770.20/x
  3. Step 3: Cross multiply
    720,658.20x = 1,080,080.10 × 365,770.20
  4. Step 4: Simplify right side
    720,658.20x = 395,061,114,193.02
  5. Step 5: Solve for x
    x = 395,061,114,193.02/720,658.20
  6. Step 6: Final answer
    x = 548,194.85

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1.5x scale

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.