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Finding the Fourth Proportional to 478,640.91, 660,524.46 and 263,780.98

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Solution

The fourth proportional to 478,640.91, 660,524.46 and 263,780.98 is: 364,017.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,640.91 : 660,524.46 = 263,780.98 : x
  2. Step 2: Convert to fraction form
    478,640.91/660,524.46 = 263,780.98/x
  3. Step 3: Cross multiply
    478,640.91x = 660,524.46 × 263,780.98
  4. Step 4: Simplify right side
    478,640.91x = 174,233,789,372.77
  5. Step 5: Solve for x
    x = 174,233,789,372.77/478,640.91
  6. Step 6: Final answer
    x = 364,017.75

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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.