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Finding the Fourth Proportional to 711,993.52, 983,026.73 and 421,698.43

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Solution

The fourth proportional to 711,993.52, 983,026.73 and 421,698.43 is: 582,225.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,993.52 : 983,026.73 = 421,698.43 : x
  2. Step 2: Convert to fraction form
    711,993.52/983,026.73 = 421,698.43/x
  3. Step 3: Cross multiply
    711,993.52x = 983,026.73 × 421,698.43
  4. Step 4: Simplify right side
    711,993.52x = 414,540,821,665.41
  5. Step 5: Solve for x
    x = 414,540,821,665.41/711,993.52
  6. Step 6: Final answer
    x = 582,225.56

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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.