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Finding the Fourth Proportional to 528,896.18, 729,696.48 and 338,019.68

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Solution

The fourth proportional to 528,896.18, 729,696.48 and 338,019.68 is: 466,351.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,896.18 : 729,696.48 = 338,019.68 : x
  2. Step 2: Convert to fraction form
    528,896.18/729,696.48 = 338,019.68/x
  3. Step 3: Cross multiply
    528,896.18x = 729,696.48 × 338,019.68
  4. Step 4: Simplify right side
    528,896.18x = 246,651,770,666.73
  5. Step 5: Solve for x
    x = 246,651,770,666.73/528,896.18
  6. Step 6: Final answer
    x = 466,351.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.