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Finding the Fourth Proportional to 720,894.60, 994,855.50 and 394,226.82

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Solution

The fourth proportional to 720,894.60, 994,855.50 and 394,226.82 is: 544,044.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,894.60 : 994,855.50 = 394,226.82 : x
  2. Step 2: Convert to fraction form
    720,894.60/994,855.50 = 394,226.82/x
  3. Step 3: Cross multiply
    720,894.60x = 994,855.50 × 394,226.82
  4. Step 4: Simplify right side
    720,894.60x = 392,198,720,124.51
  5. Step 5: Solve for x
    x = 392,198,720,124.51/720,894.60
  6. Step 6: Final answer
    x = 544,044.47

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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.