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Finding the Fourth Proportional to 666,162.92, 919,685.22 and 440,463.08

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Solution

The fourth proportional to 666,162.92, 919,685.22 and 440,463.08 is: 608,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,162.92 : 919,685.22 = 440,463.08 : x
  2. Step 2: Convert to fraction form
    666,162.92/919,685.22 = 440,463.08/x
  3. Step 3: Cross multiply
    666,162.92x = 919,685.22 × 440,463.08
  4. Step 4: Simplify right side
    666,162.92x = 405,087,384,631.68
  5. Step 5: Solve for x
    x = 405,087,384,631.68/666,162.92
  6. Step 6: Final answer
    x = 608,090.56

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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.