Home / 691,309,420.20-1,036,831,419.90-206,651,039.40

Finding the Fourth Proportional to 691,309,420.20, 1,036,831,419.90 and 206,651,039.40

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Solution

The fourth proportional to 691,309,420.20, 1,036,831,419.90 and 206,651,039.40 is: 309,936,888.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,309,420.20 : 1,036,831,419.90 = 206,651,039.40 : x
  2. Step 2: Convert to fraction form
    691,309,420.20/1,036,831,419.90 = 206,651,039.40/x
  3. Step 3: Cross multiply
    691,309,420.20x = 1,036,831,419.90 × 206,651,039.40
  4. Step 4: Simplify right side
    691,309,420.20x = 214,262,290,604,912,832
  5. Step 5: Solve for x
    x = 214,262,290,604,912,832/691,309,420.20
  6. Step 6: Final answer
    x = 309,936,888.38

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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.