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Finding the Fourth Proportional to 711,994.52, 983,028.11 and 421,699.43

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Solution

The fourth proportional to 711,994.52, 983,028.11 and 421,699.43 is: 582,226.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,994.52 : 983,028.11 = 421,699.43 : x
  2. Step 2: Convert to fraction form
    711,994.52/983,028.11 = 421,699.43/x
  3. Step 3: Cross multiply
    711,994.52x = 983,028.11 × 421,699.43
  4. Step 4: Simplify right side
    711,994.52x = 414,542,393,660.98
  5. Step 5: Solve for x
    x = 414,542,393,660.98/711,994.52
  6. Step 6: Final answer
    x = 582,226.94

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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.