Home / 515,813,119.24-711,819,072.54-280,863,217.12

Finding the Fourth Proportional to 515,813,119.24, 711,819,072.54 and 280,863,217.12

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Solution

The fourth proportional to 515,813,119.24, 711,819,072.54 and 280,863,217.12 is: 387,589,588.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,813,119.24 : 711,819,072.54 = 280,863,217.12 : x
  2. Step 2: Convert to fraction form
    515,813,119.24/711,819,072.54 = 280,863,217.12/x
  3. Step 3: Cross multiply
    515,813,119.24x = 711,819,072.54 × 280,863,217.12
  4. Step 4: Simplify right side
    515,813,119.24x = 199,923,794,720,959,040
  5. Step 5: Solve for x
    x = 199,923,794,720,959,040/515,813,119.24
  6. Step 6: Final answer
    x = 387,589,588.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.