Home / 812,021,754.80-1,120,560,015.50-440,735,814.56

Finding the Fourth Proportional to 812,021,754.80, 1,120,560,015.50 and 440,735,814.56

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Solution

The fourth proportional to 812,021,754.80, 1,120,560,015.50 and 440,735,814.56 is: 608,199,137.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,021,754.80 : 1,120,560,015.50 = 440,735,814.56 : x
  2. Step 2: Convert to fraction form
    812,021,754.80/1,120,560,015.50 = 440,735,814.56/x
  3. Step 3: Cross multiply
    812,021,754.80x = 1,120,560,015.50 × 440,735,814.56
  4. Step 4: Simplify right side
    812,021,754.80x = 493,870,931,194,758,720
  5. Step 5: Solve for x
    x = 493,870,931,194,758,720/812,021,754.80
  6. Step 6: Final answer
    x = 608,199,137.86

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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.