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Finding the Fourth Proportional to 528,727.53, 729,644.92 and 287,010.27

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Solution

The fourth proportional to 528,727.53, 729,644.92 and 287,010.27 is: 396,074.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,727.53 : 729,644.92 = 287,010.27 : x
  2. Step 2: Convert to fraction form
    528,727.53/729,644.92 = 287,010.27/x
  3. Step 3: Cross multiply
    528,727.53x = 729,644.92 × 287,010.27
  4. Step 4: Simplify right side
    528,727.53x = 209,415,580,410.05
  5. Step 5: Solve for x
    x = 209,415,580,410.05/528,727.53
  6. Step 6: Final answer
    x = 396,074.67

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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.