Home / 427,992,792.12-641,786,811.45-165,800,146.97

Finding the Fourth Proportional to 427,992,792.12, 641,786,811.45 and 165,800,146.97

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Solution

The fourth proportional to 427,992,792.12, 641,786,811.45 and 165,800,146.97 is: 248,621,821.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,992,792.12 : 641,786,811.45 = 165,800,146.97 : x
  2. Step 2: Convert to fraction form
    427,992,792.12/641,786,811.45 = 165,800,146.97/x
  3. Step 3: Cross multiply
    427,992,792.12x = 641,786,811.45 × 165,800,146.97
  4. Step 4: Simplify right side
    427,992,792.12x = 106,408,347,658,608,752
  5. Step 5: Solve for x
    x = 106,408,347,658,608,752/427,992,792.12
  6. Step 6: Final answer
    x = 248,621,821.72

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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.