Home / 521,567,999.70-782,351,999.55-262,683,186.90

Finding the Fourth Proportional to 521,567,999.70, 782,351,999.55 and 262,683,186.90

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Solution

The fourth proportional to 521,567,999.70, 782,351,999.55 and 262,683,186.90 is: 394,024,780.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,567,999.70 : 782,351,999.55 = 262,683,186.90 : x
  2. Step 2: Convert to fraction form
    521,567,999.70/782,351,999.55 = 262,683,186.90/x
  3. Step 3: Cross multiply
    521,567,999.70x = 782,351,999.55 × 262,683,186.90
  4. Step 4: Simplify right side
    521,567,999.70x = 205,510,716,519,381,344
  5. Step 5: Solve for x
    x = 205,510,716,519,381,344/521,567,999.70
  6. Step 6: Final answer
    x = 394,024,780.35

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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.