Home / 427,780,645.12-641,595,117.20-194,556,728.90

Finding the Fourth Proportional to 427,780,645.12, 641,595,117.20 and 194,556,728.90

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Solution

The fourth proportional to 427,780,645.12, 641,595,117.20 and 194,556,728.90 is: 291,800,596.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,780,645.12 : 641,595,117.20 = 194,556,728.90 : x
  2. Step 2: Convert to fraction form
    427,780,645.12/641,595,117.20 = 194,556,728.90/x
  3. Step 3: Cross multiply
    427,780,645.12x = 641,595,117.20 × 194,556,728.90
  4. Step 4: Simplify right side
    427,780,645.12x = 124,826,647,280,644,144
  5. Step 5: Solve for x
    x = 124,826,647,280,644,144/427,780,645.12
  6. Step 6: Final answer
    x = 291,800,596.18

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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.