Home / 863,930,682.81-1,192,223,571.89-487,666,469.61

Finding the Fourth Proportional to 863,930,682.81, 1,192,223,571.89 and 487,666,469.61

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Solution

The fourth proportional to 863,930,682.81, 1,192,223,571.89 and 487,666,469.61 is: 672,979,293.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,930,682.81 : 1,192,223,571.89 = 487,666,469.61 : x
  2. Step 2: Convert to fraction form
    863,930,682.81/1,192,223,571.89 = 487,666,469.61/x
  3. Step 3: Cross multiply
    863,930,682.81x = 1,192,223,571.89 × 487,666,469.61
  4. Step 4: Simplify right side
    863,930,682.81x = 581,407,460,286,982,016
  5. Step 5: Solve for x
    x = 581,407,460,286,982,016/863,930,682.81
  6. Step 6: Final answer
    x = 672,979,293.20

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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.