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Finding the Fourth Proportional to 666,385.53, 919,633.14 and 364,579.53

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Solution

The fourth proportional to 666,385.53, 919,633.14 and 364,579.53 is: 503,131.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,385.53 : 919,633.14 = 364,579.53 : x
  2. Step 2: Convert to fraction form
    666,385.53/919,633.14 = 364,579.53/x
  3. Step 3: Cross multiply
    666,385.53x = 919,633.14 × 364,579.53
  4. Step 4: Simplify right side
    666,385.53x = 335,279,417,953.62
  5. Step 5: Solve for x
    x = 335,279,417,953.62/666,385.53
  6. Step 6: Final answer
    x = 503,131.30

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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.