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Finding the Fourth Proportional to 528,850.42, 729,813.54 and 287,133.02

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Solution

The fourth proportional to 528,850.42, 729,813.54 and 287,133.02 is: 396,243.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,850.42 : 729,813.54 = 287,133.02 : x
  2. Step 2: Convert to fraction form
    528,850.42/729,813.54 = 287,133.02/x
  3. Step 3: Cross multiply
    528,850.42x = 729,813.54 × 287,133.02
  4. Step 4: Simplify right side
    528,850.42x = 209,553,565,777.09
  5. Step 5: Solve for x
    x = 209,553,565,777.09/528,850.42
  6. Step 6: Final answer
    x = 396,243.55

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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.