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Finding the Fourth Proportional to 528,797.58, 729,749.15 and 287,079.97

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Solution

The fourth proportional to 528,797.58, 729,749.15 and 287,079.97 is: 396,174.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,797.58 : 729,749.15 = 287,079.97 : x
  2. Step 2: Convert to fraction form
    528,797.58/729,749.15 = 287,079.97/x
  3. Step 3: Cross multiply
    528,797.58x = 729,749.15 × 287,079.97
  4. Step 4: Simplify right side
    528,797.58x = 209,496,364,089.53
  5. Step 5: Solve for x
    x = 209,496,364,089.53/528,797.58
  6. Step 6: Final answer
    x = 396,174.97

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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.