Home / 678,298,489.25-1,017,206,952.44-199,014,572.75

Finding the Fourth Proportional to 678,298,489.25, 1,017,206,952.44 and 199,014,572.75

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Solution

The fourth proportional to 678,298,489.25, 1,017,206,952.44 and 199,014,572.75 is: 298,451,213.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,298,489.25 : 1,017,206,952.44 = 199,014,572.75 : x
  2. Step 2: Convert to fraction form
    678,298,489.25/1,017,206,952.44 = 199,014,572.75/x
  3. Step 3: Cross multiply
    678,298,489.25x = 1,017,206,952.44 × 199,014,572.75
  4. Step 4: Simplify right side
    678,298,489.25x = 202,439,007,032,095,040
  5. Step 5: Solve for x
    x = 202,439,007,032,095,040/678,298,489.25
  6. Step 6: Final answer
    x = 298,451,213.21

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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.