Home / 528,942.21-729,937.62-287,222.64

Finding the Fourth Proportional to 528,942.21, 729,937.62 and 287,222.64

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Solution

The fourth proportional to 528,942.21, 729,937.62 and 287,222.64 is: 396,365.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,942.21 : 729,937.62 = 287,222.64 : x
  2. Step 2: Convert to fraction form
    528,942.21/729,937.62 = 287,222.64/x
  3. Step 3: Cross multiply
    528,942.21x = 729,937.62 × 287,222.64
  4. Step 4: Simplify right side
    528,942.21x = 209,654,610,251.72
  5. Step 5: Solve for x
    x = 209,654,610,251.72/528,942.21
  6. Step 6: Final answer
    x = 396,365.82

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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.