Home / 812,021,709.11-1,120,559,952.49-440,735,768.87

Finding the Fourth Proportional to 812,021,709.11, 1,120,559,952.49 and 440,735,768.87

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Solution

The fourth proportional to 812,021,709.11, 1,120,559,952.49 and 440,735,768.87 is: 608,199,074.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,021,709.11 : 1,120,559,952.49 = 440,735,768.87 : x
  2. Step 2: Convert to fraction form
    812,021,709.11/1,120,559,952.49 = 440,735,768.87/x
  3. Step 3: Cross multiply
    812,021,709.11x = 1,120,559,952.49 × 440,735,768.87
  4. Step 4: Simplify right side
    812,021,709.11x = 493,870,852,218,906,176
  5. Step 5: Solve for x
    x = 493,870,852,218,906,176/812,021,709.11
  6. Step 6: Final answer
    x = 608,199,074.83

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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.