Home / 513,217,793.90-769,826,690.85-309,144,449.90

Finding the Fourth Proportional to 513,217,793.90, 769,826,690.85 and 309,144,449.90

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Solution

The fourth proportional to 513,217,793.90, 769,826,690.85 and 309,144,449.90 is: 463,716,674.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,217,793.90 : 769,826,690.85 = 309,144,449.90 : x
  2. Step 2: Convert to fraction form
    513,217,793.90/769,826,690.85 = 309,144,449.90/x
  3. Step 3: Cross multiply
    513,217,793.90x = 769,826,690.85 × 309,144,449.90
  4. Step 4: Simplify right side
    513,217,793.90x = 237,987,648,861,160,608
  5. Step 5: Solve for x
    x = 237,987,648,861,160,608/513,217,793.90
  6. Step 6: Final answer
    x = 463,716,674.85

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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.