Home / 719,388.78-1,079,082.45-213,947.70

Finding the Fourth Proportional to 719,388.78, 1,079,082.45 and 213,947.70

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Solution

The fourth proportional to 719,388.78, 1,079,082.45 and 213,947.70 is: 320,921.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,388.78 : 1,079,082.45 = 213,947.70 : x
  2. Step 2: Convert to fraction form
    719,388.78/1,079,082.45 = 213,947.70/x
  3. Step 3: Cross multiply
    719,388.78x = 1,079,082.45 × 213,947.70
  4. Step 4: Simplify right side
    719,388.78x = 230,867,208,287.87
  5. Step 5: Solve for x
    x = 230,867,208,287.87/719,388.78
  6. Step 6: Final answer
    x = 320,921.34

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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.