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Finding the Fourth Proportional to 720,044.28, 993,641.82 and 397,747.44

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Solution

The fourth proportional to 720,044.28, 993,641.82 and 397,747.44 is: 548,880.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,044.28 : 993,641.82 = 397,747.44 : x
  2. Step 2: Convert to fraction form
    720,044.28/993,641.82 = 397,747.44/x
  3. Step 3: Cross multiply
    720,044.28x = 993,641.82 × 397,747.44
  4. Step 4: Simplify right side
    720,044.28x = 395,218,490,181.94
  5. Step 5: Solve for x
    x = 395,218,490,181.94/720,044.28
  6. Step 6: Final answer
    x = 548,880.81

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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.