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Finding the Fourth Proportional to 666,664.73, 919,990.59 and 360,734.39

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Solution

The fourth proportional to 666,664.73, 919,990.59 and 360,734.39 is: 497,809.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,664.73 : 919,990.59 = 360,734.39 : x
  2. Step 2: Convert to fraction form
    666,664.73/919,990.59 = 360,734.39/x
  3. Step 3: Cross multiply
    666,664.73x = 919,990.59 × 360,734.39
  4. Step 4: Simplify right side
    666,664.73x = 331,872,244,289.39
  5. Step 5: Solve for x
    x = 331,872,244,289.39/666,664.73
  6. Step 6: Final answer
    x = 497,809.81

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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.