Home / 812,021,755.09-1,120,560,015.95-440,735,814.85

Finding the Fourth Proportional to 812,021,755.09, 1,120,560,015.95 and 440,735,814.85

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Solution

The fourth proportional to 812,021,755.09, 1,120,560,015.95 and 440,735,814.85 is: 608,199,138.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,021,755.09 : 1,120,560,015.95 = 440,735,814.85 : x
  2. Step 2: Convert to fraction form
    812,021,755.09/1,120,560,015.95 = 440,735,814.85/x
  3. Step 3: Cross multiply
    812,021,755.09x = 1,120,560,015.95 × 440,735,814.85
  4. Step 4: Simplify right side
    812,021,755.09x = 493,870,931,715,594,624
  5. Step 5: Solve for x
    x = 493,870,931,715,594,624/812,021,755.09
  6. Step 6: Final answer
    x = 608,199,138.29

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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.