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Finding the Fourth Proportional to 438,789.63, 657,060.87 and 303,666.65

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Solution

The fourth proportional to 438,789.63, 657,060.87 and 303,666.65 is: 454,722.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,789.63 : 657,060.87 = 303,666.65 : x
  2. Step 2: Convert to fraction form
    438,789.63/657,060.87 = 303,666.65/x
  3. Step 3: Cross multiply
    438,789.63x = 657,060.87 × 303,666.65
  4. Step 4: Simplify right side
    438,789.63x = 199,527,469,953.68
  5. Step 5: Solve for x
    x = 199,527,469,953.68/438,789.63
  6. Step 6: Final answer
    x = 454,722.39

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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.