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Finding the Fourth Proportional to 666,022.80, 998,409.67 and 324,391.53

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Solution

The fourth proportional to 666,022.80, 998,409.67 and 324,391.53 is: 486,283.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,022.80 : 998,409.67 = 324,391.53 : x
  2. Step 2: Convert to fraction form
    666,022.80/998,409.67 = 324,391.53/x
  3. Step 3: Cross multiply
    666,022.80x = 998,409.67 × 324,391.53
  4. Step 4: Simplify right side
    666,022.80x = 323,875,640,418.10
  5. Step 5: Solve for x
    x = 323,875,640,418.10/666,022.80
  6. Step 6: Final answer
    x = 486,283.11

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1.5x scale

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.