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Finding the Fourth Proportional to 666,759.94, 920,121.52 and 360,829.54

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Solution

The fourth proportional to 666,759.94, 920,121.52 and 360,829.54 is: 497,940.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,759.94 : 920,121.52 = 360,829.54 : x
  2. Step 2: Convert to fraction form
    666,759.94/920,121.52 = 360,829.54/x
  3. Step 3: Cross multiply
    666,759.94x = 920,121.52 × 360,829.54
  4. Step 4: Simplify right side
    666,759.94x = 332,007,024,805.70
  5. Step 5: Solve for x
    x = 332,007,024,805.70/666,759.94
  6. Step 6: Final answer
    x = 497,940.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.