Home / 772,109.70-1,158,164.55-211,200.90

Finding the Fourth Proportional to 772,109.70, 1,158,164.55 and 211,200.90

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Solution

The fourth proportional to 772,109.70, 1,158,164.55 and 211,200.90 is: 316,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,109.70 : 1,158,164.55 = 211,200.90 : x
  2. Step 2: Convert to fraction form
    772,109.70/1,158,164.55 = 211,200.90/x
  3. Step 3: Cross multiply
    772,109.70x = 1,158,164.55 × 211,200.90
  4. Step 4: Simplify right side
    772,109.70x = 244,605,395,308.10
  5. Step 5: Solve for x
    x = 244,605,395,308.10/772,109.70
  6. Step 6: Final answer
    x = 316,801.35

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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.