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Finding the Fourth Proportional to 666,759.93, 920,121.52 and 360,829.55

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Solution

The fourth proportional to 666,759.93, 920,121.52 and 360,829.55 is: 497,940.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,759.93 : 920,121.52 = 360,829.55 : x
  2. Step 2: Convert to fraction form
    666,759.93/920,121.52 = 360,829.55/x
  3. Step 3: Cross multiply
    666,759.93x = 920,121.52 × 360,829.55
  4. Step 4: Simplify right side
    666,759.93x = 332,007,034,006.92
  5. Step 5: Solve for x
    x = 332,007,034,006.92/666,759.93
  6. Step 6: Final answer
    x = 497,940.89

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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.