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Finding the Fourth Proportional to 608,849.78, 913,255.83 and 289,231.69

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Solution

The fourth proportional to 608,849.78, 913,255.83 and 289,231.69 is: 433,838.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,849.78 : 913,255.83 = 289,231.69 : x
  2. Step 2: Convert to fraction form
    608,849.78/913,255.83 = 289,231.69/x
  3. Step 3: Cross multiply
    608,849.78x = 913,255.83 × 289,231.69
  4. Step 4: Simplify right side
    608,849.78x = 264,142,527,473.64
  5. Step 5: Solve for x
    x = 264,142,527,473.64/608,849.78
  6. Step 6: Final answer
    x = 433,838.59

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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.