Home / 876,378.90-1,314,568.36-211,530.90

Finding the Fourth Proportional to 876,378.90, 1,314,568.36 and 211,530.90

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Solution

The fourth proportional to 876,378.90, 1,314,568.36 and 211,530.90 is: 317,296.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,378.90 : 1,314,568.36 = 211,530.90 : x
  2. Step 2: Convert to fraction form
    876,378.90/1,314,568.36 = 211,530.90/x
  3. Step 3: Cross multiply
    876,378.90x = 1,314,568.36 × 211,530.90
  4. Step 4: Simplify right side
    876,378.90x = 278,071,833,496.37
  5. Step 5: Solve for x
    x = 278,071,833,496.37/876,378.90
  6. Step 6: Final answer
    x = 317,296.36

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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.