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Finding the Fourth Proportional to 529,693.02, 730,990.83 and 287,991.84

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Solution

The fourth proportional to 529,693.02, 730,990.83 and 287,991.84 is: 397,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,693.02 : 730,990.83 = 287,991.84 : x
  2. Step 2: Convert to fraction form
    529,693.02/730,990.83 = 287,991.84/x
  3. Step 3: Cross multiply
    529,693.02x = 730,990.83 × 287,991.84
  4. Step 4: Simplify right side
    529,693.02x = 210,519,394,154.83
  5. Step 5: Solve for x
    x = 210,519,394,154.83/529,693.02
  6. Step 6: Final answer
    x = 397,436.60

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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.