Home / 780,394.41-1,170,592.07-219,428.91

Finding the Fourth Proportional to 780,394.41, 1,170,592.07 and 219,428.91

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Solution

The fourth proportional to 780,394.41, 1,170,592.07 and 219,428.91 is: 329,143.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,394.41 : 1,170,592.07 = 219,428.91 : x
  2. Step 2: Convert to fraction form
    780,394.41/1,170,592.07 = 219,428.91/x
  3. Step 3: Cross multiply
    780,394.41x = 1,170,592.07 × 219,428.91
  4. Step 4: Simplify right side
    780,394.41x = 256,861,740,877.60
  5. Step 5: Solve for x
    x = 256,861,740,877.60/780,394.41
  6. Step 6: Final answer
    x = 329,143.49

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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.