Home / 677,677.40-1,016,919.30-256,995.80

Finding the Fourth Proportional to 677,677.40, 1,016,919.30 and 256,995.80

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Solution

The fourth proportional to 677,677.40, 1,016,919.30 and 256,995.80 is: 385,646.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,677.40 : 1,016,919.30 = 256,995.80 : x
  2. Step 2: Convert to fraction form
    677,677.40/1,016,919.30 = 256,995.80/x
  3. Step 3: Cross multiply
    677,677.40x = 1,016,919.30 × 256,995.80
  4. Step 4: Simplify right side
    677,677.40x = 261,343,989,038.94
  5. Step 5: Solve for x
    x = 261,343,989,038.94/677,677.40
  6. Step 6: Final answer
    x = 385,646.61

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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.