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Finding the Fourth Proportional to 528,092.78, 728,768.24 and 286,375.29

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Solution

The fourth proportional to 528,092.78, 728,768.24 and 286,375.29 is: 395,198.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,092.78 : 728,768.24 = 286,375.29 : x
  2. Step 2: Convert to fraction form
    528,092.78/728,768.24 = 286,375.29/x
  3. Step 3: Cross multiply
    528,092.78x = 728,768.24 × 286,375.29
  4. Step 4: Simplify right side
    528,092.78x = 208,701,216,072.79
  5. Step 5: Solve for x
    x = 208,701,216,072.79/528,092.78
  6. Step 6: Final answer
    x = 395,198.01

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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.