Home / 815,826,500.30-1,223,738,221.07-255,631,217.76

Finding the Fourth Proportional to 815,826,500.30, 1,223,738,221.07 and 255,631,217.76

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Solution

The fourth proportional to 815,826,500.30, 1,223,738,221.07 and 255,631,217.76 is: 383,446,347.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,826,500.30 : 1,223,738,221.07 = 255,631,217.76 : x
  2. Step 2: Convert to fraction form
    815,826,500.30/1,223,738,221.07 = 255,631,217.76/x
  3. Step 3: Cross multiply
    815,826,500.30x = 1,223,738,221.07 × 255,631,217.76
  4. Step 4: Simplify right side
    815,826,500.30x = 312,825,691,672,219,264
  5. Step 5: Solve for x
    x = 312,825,691,672,219,264/815,826,500.30
  6. Step 6: Final answer
    x = 383,446,347.42

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1.5x scale

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.