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Finding the Fourth Proportional to 720,524.60, 994,375.44 and 398,227.76

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Solution

The fourth proportional to 720,524.60, 994,375.44 and 398,227.76 is: 549,582.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,524.60 : 994,375.44 = 398,227.76 : x
  2. Step 2: Convert to fraction form
    720,524.60/994,375.44 = 398,227.76/x
  3. Step 3: Cross multiply
    720,524.60x = 994,375.44 × 398,227.76
  4. Step 4: Simplify right side
    720,524.60x = 395,987,904,070.21
  5. Step 5: Solve for x
    x = 395,987,904,070.21/720,524.60
  6. Step 6: Final answer
    x = 549,582.77

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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.