Home / 772,116.70-1,158,175.05-211,207.90

Finding the Fourth Proportional to 772,116.70, 1,158,175.05 and 211,207.90

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Solution

The fourth proportional to 772,116.70, 1,158,175.05 and 211,207.90 is: 316,811.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,116.70 : 1,158,175.05 = 211,207.90 : x
  2. Step 2: Convert to fraction form
    772,116.70/1,158,175.05 = 211,207.90/x
  3. Step 3: Cross multiply
    772,116.70x = 1,158,175.05 × 211,207.90
  4. Step 4: Simplify right side
    772,116.70x = 244,615,720,142.90
  5. Step 5: Solve for x
    x = 244,615,720,142.90/772,116.70
  6. Step 6: Final answer
    x = 316,811.85

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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.