Home / 501,087,996.50-691,500,021.09-278,103,345.62

Finding the Fourth Proportional to 501,087,996.50, 691,500,021.09 and 278,103,345.62

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Solution

The fourth proportional to 501,087,996.50, 691,500,021.09 and 278,103,345.62 is: 383,781,832.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,087,996.50 : 691,500,021.09 = 278,103,345.62 : x
  2. Step 2: Convert to fraction form
    501,087,996.50/691,500,021.09 = 278,103,345.62/x
  3. Step 3: Cross multiply
    501,087,996.50x = 691,500,021.09 × 278,103,345.62
  4. Step 4: Simplify right side
    501,087,996.50x = 192,308,469,361,429,568
  5. Step 5: Solve for x
    x = 192,308,469,361,429,568/501,087,996.50
  6. Step 6: Final answer
    x = 383,781,832.14

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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.