Home / 427,991,838.78-641,785,408.74-165,799,193.34

Finding the Fourth Proportional to 427,991,838.78, 641,785,408.74 and 165,799,193.34

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Solution

The fourth proportional to 427,991,838.78, 641,785,408.74 and 165,799,193.34 is: 248,620,402.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,991,838.78 : 641,785,408.74 = 165,799,193.34 : x
  2. Step 2: Convert to fraction form
    427,991,838.78/641,785,408.74 = 165,799,193.34/x
  3. Step 3: Cross multiply
    427,991,838.78x = 641,785,408.74 × 165,799,193.34
  4. Step 4: Simplify right side
    427,991,838.78x = 106,407,503,066,474,192
  5. Step 5: Solve for x
    x = 106,407,503,066,474,192/427,991,838.78
  6. Step 6: Final answer
    x = 248,620,402.13

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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.