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Finding the Fourth Proportional to 666,385.92, 919,633.65 and 364,579.92

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Solution

The fourth proportional to 666,385.92, 919,633.65 and 364,579.92 is: 503,131.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,385.92 : 919,633.65 = 364,579.92 : x
  2. Step 2: Convert to fraction form
    666,385.92/919,633.65 = 364,579.92/x
  3. Step 3: Cross multiply
    666,385.92x = 919,633.65 × 364,579.92
  4. Step 4: Simplify right side
    666,385.92x = 335,279,962,546.31
  5. Step 5: Solve for x
    x = 335,279,962,546.31/666,385.92
  6. Step 6: Final answer
    x = 503,131.82

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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.