Home / 513,737,899.65-708,958,306.22-278,788,559.78

Finding the Fourth Proportional to 513,737,899.65, 708,958,306.22 and 278,788,559.78

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Solution

The fourth proportional to 513,737,899.65, 708,958,306.22 and 278,788,559.78 is: 384,728,215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,737,899.65 : 708,958,306.22 = 278,788,559.78 : x
  2. Step 2: Convert to fraction form
    513,737,899.65/708,958,306.22 = 278,788,559.78/x
  3. Step 3: Cross multiply
    513,737,899.65x = 708,958,306.22 × 278,788,559.78
  4. Step 4: Simplify right side
    513,737,899.65x = 197,649,465,135,520,512
  5. Step 5: Solve for x
    x = 197,649,465,135,520,512/513,737,899.65
  6. Step 6: Final answer
    x = 384,728,215.05

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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.