Home / 681,785.80-1,020,710.40-416,065.30

Finding the Fourth Proportional to 681,785.80, 1,020,710.40 and 416,065.30

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Solution

The fourth proportional to 681,785.80, 1,020,710.40 and 416,065.30 is: 622,896.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,785.80 : 1,020,710.40 = 416,065.30 : x
  2. Step 2: Convert to fraction form
    681,785.80/1,020,710.40 = 416,065.30/x
  3. Step 3: Cross multiply
    681,785.80x = 1,020,710.40 × 416,065.30
  4. Step 4: Simplify right side
    681,785.80x = 424,682,178,789.12
  5. Step 5: Solve for x
    x = 424,682,178,789.12/681,785.80
  6. Step 6: Final answer
    x = 622,896.78

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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.