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Finding the Fourth Proportional to 666,065.16, 998,834.76 and 266,631.48

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Solution

The fourth proportional to 666,065.16, 998,834.76 and 266,631.48 is: 399,841.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,065.16 : 998,834.76 = 266,631.48 : x
  2. Step 2: Convert to fraction form
    666,065.16/998,834.76 = 266,631.48/x
  3. Step 3: Cross multiply
    666,065.16x = 998,834.76 × 266,631.48
  4. Step 4: Simplify right side
    666,065.16x = 266,320,790,334.25
  5. Step 5: Solve for x
    x = 266,320,790,334.25/666,065.16
  6. Step 6: Final answer
    x = 399,841.95

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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.