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Finding the Fourth Proportional to 638,606.40, 956,872.80 and 401,524.80

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Solution

The fourth proportional to 638,606.40, 956,872.80 and 401,524.80 is: 601,635.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,606.40 : 956,872.80 = 401,524.80 : x
  2. Step 2: Convert to fraction form
    638,606.40/956,872.80 = 401,524.80/x
  3. Step 3: Cross multiply
    638,606.40x = 956,872.80 × 401,524.80
  4. Step 4: Simplify right side
    638,606.40x = 384,208,159,645.44
  5. Step 5: Solve for x
    x = 384,208,159,645.44/638,606.40
  6. Step 6: Final answer
    x = 601,635.31

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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.