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Finding the Fourth Proportional to 666,399.84, 919,654.74 and 364,593.84

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Solution

The fourth proportional to 666,399.84, 919,654.74 and 364,593.84 is: 503,152.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,399.84 : 919,654.74 = 364,593.84 : x
  2. Step 2: Convert to fraction form
    666,399.84/919,654.74 = 364,593.84/x
  3. Step 3: Cross multiply
    666,399.84x = 919,654.74 × 364,593.84
  4. Step 4: Simplify right side
    666,399.84x = 335,300,453,130.80
  5. Step 5: Solve for x
    x = 335,300,453,130.80/666,399.84
  6. Step 6: Final answer
    x = 503,152.06

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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.