Home / 677,658.40-1,016,890.80-256,976.80

Finding the Fourth Proportional to 677,658.40, 1,016,890.80 and 256,976.80

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Solution

The fourth proportional to 677,658.40, 1,016,890.80 and 256,976.80 is: 385,618.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,658.40 : 1,016,890.80 = 256,976.80 : x
  2. Step 2: Convert to fraction form
    677,658.40/1,016,890.80 = 256,976.80/x
  3. Step 3: Cross multiply
    677,658.40x = 1,016,890.80 × 256,976.80
  4. Step 4: Simplify right side
    677,658.40x = 261,317,343,733.44
  5. Step 5: Solve for x
    x = 261,317,343,733.44/677,658.40
  6. Step 6: Final answer
    x = 385,618.10

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1.5x scale

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.