Home / 406,723,608.10-561,278,940.85-221,084,623.79

Finding the Fourth Proportional to 406,723,608.10, 561,278,940.85 and 221,084,623.79

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Solution

The fourth proportional to 406,723,608.10, 561,278,940.85 and 221,084,623.79 is: 305,096,977.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,723,608.10 : 561,278,940.85 = 221,084,623.79 : x
  2. Step 2: Convert to fraction form
    406,723,608.10/561,278,940.85 = 221,084,623.79/x
  3. Step 3: Cross multiply
    406,723,608.10x = 561,278,940.85 × 221,084,623.79
  4. Step 4: Simplify right side
    406,723,608.10x = 124,090,143,479,071,920
  5. Step 5: Solve for x
    x = 124,090,143,479,071,920/406,723,608.10
  6. Step 6: Final answer
    x = 305,096,977.43

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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.