Home / 719,115.76-1,078,338.30-213,491.08

Finding the Fourth Proportional to 719,115.76, 1,078,338.30 and 213,491.08

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Solution

The fourth proportional to 719,115.76, 1,078,338.30 and 213,491.08 is: 320,137.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,115.76 : 1,078,338.30 = 213,491.08 : x
  2. Step 2: Convert to fraction form
    719,115.76/1,078,338.30 = 213,491.08/x
  3. Step 3: Cross multiply
    719,115.76x = 1,078,338.30 × 213,491.08
  4. Step 4: Simplify right side
    719,115.76x = 230,215,608,272.36
  5. Step 5: Solve for x
    x = 230,215,608,272.36/719,115.76
  6. Step 6: Final answer
    x = 320,137.06

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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.