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Finding the Fourth Proportional to 529,699.93, 730,982.30 and 287,982.51

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Solution

The fourth proportional to 529,699.93, 730,982.30 and 287,982.51 is: 397,413.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,699.93 : 730,982.30 = 287,982.51 : x
  2. Step 2: Convert to fraction form
    529,699.93/730,982.30 = 287,982.51/x
  3. Step 3: Cross multiply
    529,699.93x = 730,982.30 × 287,982.51
  4. Step 4: Simplify right side
    529,699.93x = 210,510,120,316.09
  5. Step 5: Solve for x
    x = 210,510,120,316.09/529,699.93
  6. Step 6: Final answer
    x = 397,413.91

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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.