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Finding the Fourth Proportional to 666,464.92, 919,717.29 and 360,540.07

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Solution

The fourth proportional to 666,464.92, 919,717.29 and 360,540.07 is: 497,542.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,464.92 : 919,717.29 = 360,540.07 : x
  2. Step 2: Convert to fraction form
    666,464.92/919,717.29 = 360,540.07/x
  3. Step 3: Cross multiply
    666,464.92x = 919,717.29 × 360,540.07
  4. Step 4: Simplify right side
    666,464.92x = 331,594,933,817.52
  5. Step 5: Solve for x
    x = 331,594,933,817.52/666,464.92
  6. Step 6: Final answer
    x = 497,542.97

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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.