Home / 631,855,205.76-947,912,074.89-217,278,185.48

Finding the Fourth Proportional to 631,855,205.76, 947,912,074.89 and 217,278,185.48

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Solution

The fourth proportional to 631,855,205.76, 947,912,074.89 and 217,278,185.48 is: 325,961,729.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,855,205.76 : 947,912,074.89 = 217,278,185.48 : x
  2. Step 2: Convert to fraction form
    631,855,205.76/947,912,074.89 = 217,278,185.48/x
  3. Step 3: Cross multiply
    631,855,205.76x = 947,912,074.89 × 217,278,185.48
  4. Step 4: Simplify right side
    631,855,205.76x = 205,960,615,620,855,104
  5. Step 5: Solve for x
    x = 205,960,615,620,855,104/631,855,205.76
  6. Step 6: Final answer
    x = 325,961,729.43

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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.