Home / 811,106.20-1,216,659.30-706,130.20

Finding the Fourth Proportional to 811,106.20, 1,216,659.30 and 706,130.20

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Solution

The fourth proportional to 811,106.20, 1,216,659.30 and 706,130.20 is: 1,059,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,106.20 : 1,216,659.30 = 706,130.20 : x
  2. Step 2: Convert to fraction form
    811,106.20/1,216,659.30 = 706,130.20/x
  3. Step 3: Cross multiply
    811,106.20x = 1,216,659.30 × 706,130.20
  4. Step 4: Simplify right side
    811,106.20x = 859,119,874,840.86
  5. Step 5: Solve for x
    x = 859,119,874,840.86/811,106.20
  6. Step 6: Final answer
    x = 1,059,195.30

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Double scale
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Similar ratio
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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.