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Finding the Fourth Proportional to 666,612.92, 919,919.29 and 360,682.59

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Solution

The fourth proportional to 666,612.92, 919,919.29 and 360,682.59 is: 497,738.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,612.92 : 919,919.29 = 360,682.59 : x
  2. Step 2: Convert to fraction form
    666,612.92/919,919.29 = 360,682.59/x
  3. Step 3: Cross multiply
    666,612.92x = 919,919.29 × 360,682.59
  4. Step 4: Simplify right side
    666,612.92x = 331,798,874,546.01
  5. Step 5: Solve for x
    x = 331,798,874,546.01/666,612.92
  6. Step 6: Final answer
    x = 497,738.44

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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.