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Finding the Fourth Proportional to 528,940.30, 792,632.36 and 312,576.29

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Solution

The fourth proportional to 528,940.30, 792,632.36 and 312,576.29 is: 468,404.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,940.30 : 792,632.36 = 312,576.29 : x
  2. Step 2: Convert to fraction form
    528,940.30/792,632.36 = 312,576.29/x
  3. Step 3: Cross multiply
    528,940.30x = 792,632.36 × 312,576.29
  4. Step 4: Simplify right side
    528,940.30x = 247,758,083,563.55
  5. Step 5: Solve for x
    x = 247,758,083,563.55/528,940.30
  6. Step 6: Final answer
    x = 468,404.62

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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.