Home / 680,968.62-1,020,743.37-381,009.42

Finding the Fourth Proportional to 680,968.62, 1,020,743.37 and 381,009.42

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Solution

The fourth proportional to 680,968.62, 1,020,743.37 and 381,009.42 is: 571,117.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,968.62 : 1,020,743.37 = 381,009.42 : x
  2. Step 2: Convert to fraction form
    680,968.62/1,020,743.37 = 381,009.42/x
  3. Step 3: Cross multiply
    680,968.62x = 1,020,743.37 × 381,009.42
  4. Step 4: Simplify right side
    680,968.62x = 388,912,839,372.55
  5. Step 5: Solve for x
    x = 388,912,839,372.55/680,968.62
  6. Step 6: Final answer
    x = 571,117.12

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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.