Home / 815,843,920.80-1,223,764,364.88-255,648,646.56

Finding the Fourth Proportional to 815,843,920.80, 1,223,764,364.88 and 255,648,646.56

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Solution

The fourth proportional to 815,843,920.80, 1,223,764,364.88 and 255,648,646.56 is: 383,472,494.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,843,920.80 : 1,223,764,364.88 = 255,648,646.56 : x
  2. Step 2: Convert to fraction form
    815,843,920.80/1,223,764,364.88 = 255,648,646.56/x
  3. Step 3: Cross multiply
    815,843,920.80x = 1,223,764,364.88 × 255,648,646.56
  4. Step 4: Simplify right side
    815,843,920.80x = 312,853,703,589,930,048
  5. Step 5: Solve for x
    x = 312,853,703,589,930,048/815,843,920.80
  6. Step 6: Final answer
    x = 383,472,494.69

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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.