Home / 680,966.12-1,020,739.62-381,006.92

Finding the Fourth Proportional to 680,966.12, 1,020,739.62 and 381,006.92

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Solution

The fourth proportional to 680,966.12, 1,020,739.62 and 381,006.92 is: 571,113.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,966.12 : 1,020,739.62 = 381,006.92 : x
  2. Step 2: Convert to fraction form
    680,966.12/1,020,739.62 = 381,006.92/x
  3. Step 3: Cross multiply
    680,966.12x = 1,020,739.62 × 381,006.92
  4. Step 4: Simplify right side
    680,966.12x = 388,908,858,738.17
  5. Step 5: Solve for x
    x = 388,908,858,738.17/680,966.12
  6. Step 6: Final answer
    x = 571,113.37

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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.