Home / 719,428.28-1,079,141.70-213,987.16

Finding the Fourth Proportional to 719,428.28, 1,079,141.70 and 213,987.16

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Solution

The fourth proportional to 719,428.28, 1,079,141.70 and 213,987.16 is: 320,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,428.28 : 1,079,141.70 = 213,987.16 : x
  2. Step 2: Convert to fraction form
    719,428.28/1,079,141.70 = 213,987.16/x
  3. Step 3: Cross multiply
    719,428.28x = 1,079,141.70 × 213,987.16
  4. Step 4: Simplify right side
    719,428.28x = 230,922,467,620.57
  5. Step 5: Solve for x
    x = 230,922,467,620.57/719,428.28
  6. Step 6: Final answer
    x = 320,980.53

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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.