Home / 780,394.23-1,170,591.80-219,428.73

Finding the Fourth Proportional to 780,394.23, 1,170,591.80 and 219,428.73

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Solution

The fourth proportional to 780,394.23, 1,170,591.80 and 219,428.73 is: 329,143.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,394.23 : 1,170,591.80 = 219,428.73 : x
  2. Step 2: Convert to fraction form
    780,394.23/1,170,591.80 = 219,428.73/x
  3. Step 3: Cross multiply
    780,394.23x = 1,170,591.80 × 219,428.73
  4. Step 4: Simplify right side
    780,394.23x = 256,861,470,925.27
  5. Step 5: Solve for x
    x = 256,861,470,925.27/780,394.23
  6. Step 6: Final answer
    x = 329,143.22

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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.