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Finding the Fourth Proportional to 720,234.27, 993,896.60 and 397,937.43

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Solution

The fourth proportional to 720,234.27, 993,896.60 and 397,937.43 is: 549,138.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,234.27 : 993,896.60 = 397,937.43 : x
  2. Step 2: Convert to fraction form
    720,234.27/993,896.60 = 397,937.43/x
  3. Step 3: Cross multiply
    720,234.27x = 993,896.60 × 397,937.43
  4. Step 4: Simplify right side
    720,234.27x = 395,508,656,700.05
  5. Step 5: Solve for x
    x = 395,508,656,700.05/720,234.27
  6. Step 6: Final answer
    x = 549,138.90

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1.5x scale

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.