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Finding the Fourth Proportional to 811,571.92, 1,217,120.04 and 305,768

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Solution

The fourth proportional to 811,571.92, 1,217,120.04 and 305,768 is: 458,562.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,571.92 : 1,217,120.04 = 305,768 : x
  2. Step 2: Convert to fraction form
    811,571.92/1,217,120.04 = 305,768/x
  3. Step 3: Cross multiply
    811,571.92x = 1,217,120.04 × 305,768
  4. Step 4: Simplify right side
    811,571.92x = 372,156,360,390.72
  5. Step 5: Solve for x
    x = 372,156,360,390.72/811,571.92
  6. Step 6: Final answer
    x = 458,562.39

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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.