Home / 719,390.28-1,079,084.70-213,949.20

Finding the Fourth Proportional to 719,390.28, 1,079,084.70 and 213,949.20

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Solution

The fourth proportional to 719,390.28, 1,079,084.70 and 213,949.20 is: 320,923.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,390.28 : 1,079,084.70 = 213,949.20 : x
  2. Step 2: Convert to fraction form
    719,390.28/1,079,084.70 = 213,949.20/x
  3. Step 3: Cross multiply
    719,390.28x = 1,079,084.70 × 213,949.20
  4. Step 4: Simplify right side
    719,390.28x = 230,869,308,297.24
  5. Step 5: Solve for x
    x = 230,869,308,297.24/719,390.28
  6. Step 6: Final answer
    x = 320,923.59

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Double scale
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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.