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Finding the Fourth Proportional to 889,452.80, 1,333,718.40 and 328,198.40

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Solution

The fourth proportional to 889,452.80, 1,333,718.40 and 328,198.40 is: 492,127.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,452.80 : 1,333,718.40 = 328,198.40 : x
  2. Step 2: Convert to fraction form
    889,452.80/1,333,718.40 = 328,198.40/x
  3. Step 3: Cross multiply
    889,452.80x = 1,333,718.40 × 328,198.40
  4. Step 4: Simplify right side
    889,452.80x = 437,724,244,930.56
  5. Step 5: Solve for x
    x = 437,724,244,930.56/889,452.80
  6. Step 6: Final answer
    x = 492,127.57

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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.