Home / 620,652,293.88-931,074,100.20-211,612,785

Finding the Fourth Proportional to 620,652,293.88, 931,074,100.20 and 211,612,785

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Solution

The fourth proportional to 620,652,293.88, 931,074,100.20 and 211,612,785 is: 317,451,792.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,652,293.88 : 931,074,100.20 = 211,612,785 : x
  2. Step 2: Convert to fraction form
    620,652,293.88/931,074,100.20 = 211,612,785/x
  3. Step 3: Cross multiply
    620,652,293.88x = 931,074,100.20 × 211,612,785
  4. Step 4: Simplify right side
    620,652,293.88x = 197,027,183,384,691,072
  5. Step 5: Solve for x
    x = 197,027,183,384,691,072/620,652,293.88
  6. Step 6: Final answer
    x = 317,451,792.78

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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.