Home / 1,247,505,833.97-1,721,571,655.74-690,598,181.25

Finding the Fourth Proportional to 1,247,505,833.97, 1,721,571,655.74 and 690,598,181.25

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Solution

The fourth proportional to 1,247,505,833.97, 1,721,571,655.74 and 690,598,181.25 is: 953,033,021.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,505,833.97 : 1,721,571,655.74 = 690,598,181.25 : x
  2. Step 2: Convert to fraction form
    1,247,505,833.97/1,721,571,655.74 = 690,598,181.25/x
  3. Step 3: Cross multiply
    1,247,505,833.97x = 1,721,571,655.74 × 690,598,181.25
  4. Step 4: Simplify right side
    1,247,505,833.97x = 1,188,914,254,345,595,136
  5. Step 5: Solve for x
    x = 1,188,914,254,345,595,136/1,247,505,833.97
  6. Step 6: Final answer
    x = 953,033,021.55

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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.