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Finding the Fourth Proportional to 768,717.86, 1,152,682.52 and 449,493.44

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Solution

The fourth proportional to 768,717.86, 1,152,682.52 and 449,493.44 is: 674,009.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,717.86 : 1,152,682.52 = 449,493.44 : x
  2. Step 2: Convert to fraction form
    768,717.86/1,152,682.52 = 449,493.44/x
  3. Step 3: Cross multiply
    768,717.86x = 1,152,682.52 × 449,493.44
  4. Step 4: Simplify right side
    768,717.86x = 518,123,223,131.79
  5. Step 5: Solve for x
    x = 518,123,223,131.79/768,717.86
  6. Step 6: Final answer
    x = 674,009.61

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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.