Home / 719,301.67-1,078,952.20-213,860.45

Finding the Fourth Proportional to 719,301.67, 1,078,952.20 and 213,860.45

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Solution

The fourth proportional to 719,301.67, 1,078,952.20 and 213,860.45 is: 320,790.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,301.67 : 1,078,952.20 = 213,860.45 : x
  2. Step 2: Convert to fraction form
    719,301.67/1,078,952.20 = 213,860.45/x
  3. Step 3: Cross multiply
    719,301.67x = 1,078,952.20 × 213,860.45
  4. Step 4: Simplify right side
    719,301.67x = 230,745,205,183.22
  5. Step 5: Solve for x
    x = 230,745,205,183.22/719,301.67
  6. Step 6: Final answer
    x = 320,790.59

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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.