Home / 811,390.40-1,217,085.60-806,724.80

Finding the Fourth Proportional to 811,390.40, 1,217,085.60 and 806,724.80

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Solution

The fourth proportional to 811,390.40, 1,217,085.60 and 806,724.80 is: 1,210,087.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,390.40 : 1,217,085.60 = 806,724.80 : x
  2. Step 2: Convert to fraction form
    811,390.40/1,217,085.60 = 806,724.80/x
  3. Step 3: Cross multiply
    811,390.40x = 1,217,085.60 × 806,724.80
  4. Step 4: Simplify right side
    811,390.40x = 981,853,137,242.88
  5. Step 5: Solve for x
    x = 981,853,137,242.88/811,390.40
  6. Step 6: Final answer
    x = 1,210,087.20

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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.