Home / 918,961,015.33-1,268,174,294.81-501,275,158.21

Finding the Fourth Proportional to 918,961,015.33, 1,268,174,294.81 and 501,275,158.21

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Solution

The fourth proportional to 918,961,015.33, 1,268,174,294.81 and 501,275,158.21 is: 691,764,133.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,961,015.33 : 1,268,174,294.81 = 501,275,158.21 : x
  2. Step 2: Convert to fraction form
    918,961,015.33/1,268,174,294.81 = 501,275,158.21/x
  3. Step 3: Cross multiply
    918,961,015.33x = 1,268,174,294.81 × 501,275,158.21
  4. Step 4: Simplify right side
    918,961,015.33x = 635,704,270,268,737,920
  5. Step 5: Solve for x
    x = 635,704,270,268,737,920/918,961,015.33
  6. Step 6: Final answer
    x = 691,764,133.26

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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.