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Finding the Fourth Proportional to 528,328.97, 729,093.98 and 301,979.33

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Solution

The fourth proportional to 528,328.97, 729,093.98 and 301,979.33 is: 416,731.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,328.97 : 729,093.98 = 301,979.33 : x
  2. Step 2: Convert to fraction form
    528,328.97/729,093.98 = 301,979.33/x
  3. Step 3: Cross multiply
    528,328.97x = 729,093.98 × 301,979.33
  4. Step 4: Simplify right side
    528,328.97x = 220,171,306,432.07
  5. Step 5: Solve for x
    x = 220,171,306,432.07/528,328.97
  6. Step 6: Final answer
    x = 416,731.47

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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.