Home / 1,328,486,998.39-1,991,959,546.24-628,973,261.78

Finding the Fourth Proportional to 1,328,486,998.39, 1,991,959,546.24 and 628,973,261.78

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Solution

The fourth proportional to 1,328,486,998.39, 1,991,959,546.24 and 628,973,261.78 is: 943,094,885.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,486,998.39 : 1,991,959,546.24 = 628,973,261.78 : x
  2. Step 2: Convert to fraction form
    1,328,486,998.39/1,991,959,546.24 = 628,973,261.78/x
  3. Step 3: Cross multiply
    1,328,486,998.39x = 1,991,959,546.24 × 628,973,261.78
  4. Step 4: Simplify right side
    1,328,486,998.39x = 1,252,889,293,132,381,440
  5. Step 5: Solve for x
    x = 1,252,889,293,132,381,440/1,328,486,998.39
  6. Step 6: Final answer
    x = 943,094,885.12

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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.