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Finding the Fourth Proportional to 529,633.62, 730,897.83 and 287,918.28

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Solution

The fourth proportional to 529,633.62, 730,897.83 and 287,918.28 is: 397,329.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,633.62 : 730,897.83 = 287,918.28 : x
  2. Step 2: Convert to fraction form
    529,633.62/730,897.83 = 287,918.28/x
  3. Step 3: Cross multiply
    529,633.62x = 730,897.83 × 287,918.28
  4. Step 4: Simplify right side
    529,633.62x = 210,438,846,069.33
  5. Step 5: Solve for x
    x = 210,438,846,069.33/529,633.62
  6. Step 6: Final answer
    x = 397,329.09

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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.