Home / 719,427.28-1,079,140.20-213,986.16

Finding the Fourth Proportional to 719,427.28, 1,079,140.20 and 213,986.16

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Solution

The fourth proportional to 719,427.28, 1,079,140.20 and 213,986.16 is: 320,979.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,427.28 : 1,079,140.20 = 213,986.16 : x
  2. Step 2: Convert to fraction form
    719,427.28/1,079,140.20 = 213,986.16/x
  3. Step 3: Cross multiply
    719,427.28x = 1,079,140.20 × 213,986.16
  4. Step 4: Simplify right side
    719,427.28x = 230,921,067,499.63
  5. Step 5: Solve for x
    x = 230,921,067,499.63/719,427.28
  6. Step 6: Final answer
    x = 320,979.03

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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.