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Finding the Fourth Proportional to 528,327.72, 729,092.26 and 301,978.08

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Solution

The fourth proportional to 528,327.72, 729,092.26 and 301,978.08 is: 416,729.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,327.72 : 729,092.26 = 301,978.08 : x
  2. Step 2: Convert to fraction form
    528,327.72/729,092.26 = 301,978.08/x
  3. Step 3: Cross multiply
    528,327.72x = 729,092.26 × 301,978.08
  4. Step 4: Simplify right side
    528,327.72x = 220,169,880,817.66
  5. Step 5: Solve for x
    x = 220,169,880,817.66/528,327.72
  6. Step 6: Final answer
    x = 416,729.75

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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.