Home / 406,723,609.10-561,278,942.24-221,084,624.78

Finding the Fourth Proportional to 406,723,609.10, 561,278,942.24 and 221,084,624.78

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Solution

The fourth proportional to 406,723,609.10, 561,278,942.24 and 221,084,624.78 is: 305,096,978.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,723,609.10 : 561,278,942.24 = 221,084,624.78 : x
  2. Step 2: Convert to fraction form
    406,723,609.10/561,278,942.24 = 221,084,624.78/x
  3. Step 3: Cross multiply
    406,723,609.10x = 561,278,942.24 × 221,084,624.78
  4. Step 4: Simplify right side
    406,723,609.10x = 124,090,144,342,045,696
  5. Step 5: Solve for x
    x = 124,090,144,342,045,696/406,723,609.10
  6. Step 6: Final answer
    x = 305,096,978.80

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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.