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Finding the Fourth Proportional to 666,052.16, 998,815.26 and 266,618.48

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Solution

The fourth proportional to 666,052.16, 998,815.26 and 266,618.48 is: 399,822.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,052.16 : 998,815.26 = 266,618.48 : x
  2. Step 2: Convert to fraction form
    666,052.16/998,815.26 = 266,618.48/x
  3. Step 3: Cross multiply
    666,052.16x = 998,815.26 × 266,618.48
  4. Step 4: Simplify right side
    666,052.16x = 266,302,606,422.01
  5. Step 5: Solve for x
    x = 266,302,606,422.01/666,052.16
  6. Step 6: Final answer
    x = 399,822.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.