Home / 1,090,720,910.28-1,505,231,999.46-645,066,297.48

Finding the Fourth Proportional to 1,090,720,910.28, 1,505,231,999.46 and 645,066,297.48

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Solution

The fourth proportional to 1,090,720,910.28, 1,505,231,999.46 and 645,066,297.48 is: 890,213,457.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,720,910.28 : 1,505,231,999.46 = 645,066,297.48 : x
  2. Step 2: Convert to fraction form
    1,090,720,910.28/1,505,231,999.46 = 645,066,297.48/x
  3. Step 3: Cross multiply
    1,090,720,910.28x = 1,505,231,999.46 × 645,066,297.48
  4. Step 4: Simplify right side
    1,090,720,910.28x = 970,974,432,740,079,616
  5. Step 5: Solve for x
    x = 970,974,432,740,079,616/1,090,720,910.28
  6. Step 6: Final answer
    x = 890,213,457.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.