Home / 648,463,687.89-972,755,327.79-211,766,660.70

Finding the Fourth Proportional to 648,463,687.89, 972,755,327.79 and 211,766,660.70

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Solution

The fourth proportional to 648,463,687.89, 972,755,327.79 and 211,766,660.70 is: 317,669,518.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,463,687.89 : 972,755,327.79 = 211,766,660.70 : x
  2. Step 2: Convert to fraction form
    648,463,687.89/972,755,327.79 = 211,766,660.70/x
  3. Step 3: Cross multiply
    648,463,687.89x = 972,755,327.79 × 211,766,660.70
  4. Step 4: Simplify right side
    648,463,687.89x = 205,997,147,444,222,176
  5. Step 5: Solve for x
    x = 205,997,147,444,222,176/648,463,687.89
  6. Step 6: Final answer
    x = 317,669,518.42

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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.