Home / 821,186.20-1,229,705.70-655,298.20

Finding the Fourth Proportional to 821,186.20, 1,229,705.70 and 655,298.20

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Solution

The fourth proportional to 821,186.20, 1,229,705.70 and 655,298.20 is: 981,292.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,186.20 : 1,229,705.70 = 655,298.20 : x
  2. Step 2: Convert to fraction form
    821,186.20/1,229,705.70 = 655,298.20/x
  3. Step 3: Cross multiply
    821,186.20x = 1,229,705.70 × 655,298.20
  4. Step 4: Simplify right side
    821,186.20x = 805,823,931,739.74
  5. Step 5: Solve for x
    x = 805,823,931,739.74/821,186.20
  6. Step 6: Final answer
    x = 981,292.59

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Double scale
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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.