Home / 415,314,581.40-622,971,872.10-172,945,992.60

Finding the Fourth Proportional to 415,314,581.40, 622,971,872.10 and 172,945,992.60

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Solution

The fourth proportional to 415,314,581.40, 622,971,872.10 and 172,945,992.60 is: 259,418,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,314,581.40 : 622,971,872.10 = 172,945,992.60 : x
  2. Step 2: Convert to fraction form
    415,314,581.40/622,971,872.10 = 172,945,992.60/x
  3. Step 3: Cross multiply
    415,314,581.40x = 622,971,872.10 × 172,945,992.60
  4. Step 4: Simplify right side
    415,314,581.40x = 107,740,488,782,214,752
  5. Step 5: Solve for x
    x = 107,740,488,782,214,752/415,314,581.40
  6. Step 6: Final answer
    x = 259,418,988.90

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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.