Home / 691,309,417.70-1,036,831,416.15-206,651,036.90

Finding the Fourth Proportional to 691,309,417.70, 1,036,831,416.15 and 206,651,036.90

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Solution

The fourth proportional to 691,309,417.70, 1,036,831,416.15 and 206,651,036.90 is: 309,936,884.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,309,417.70 : 1,036,831,416.15 = 206,651,036.90 : x
  2. Step 2: Convert to fraction form
    691,309,417.70/1,036,831,416.15 = 206,651,036.90/x
  3. Step 3: Cross multiply
    691,309,417.70x = 1,036,831,416.15 × 206,651,036.90
  4. Step 4: Simplify right side
    691,309,417.70x = 214,262,287,237,892,896
  5. Step 5: Solve for x
    x = 214,262,287,237,892,896/691,309,417.70
  6. Step 6: Final answer
    x = 309,936,884.63

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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.