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Finding the Fourth Proportional to 666,053.16, 998,816.76 and 266,619.48

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Solution

The fourth proportional to 666,053.16, 998,816.76 and 266,619.48 is: 399,823.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,053.16 : 998,816.76 = 266,619.48 : x
  2. Step 2: Convert to fraction form
    666,053.16/998,816.76 = 266,619.48/x
  3. Step 3: Cross multiply
    666,053.16x = 998,816.76 × 266,619.48
  4. Step 4: Simplify right side
    666,053.16x = 266,304,005,166.49
  5. Step 5: Solve for x
    x = 266,304,005,166.49/666,053.16
  6. Step 6: Final answer
    x = 399,823.95

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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.