Home / 640,414,741.69-960,643,377.34-220,231,991.45

Finding the Fourth Proportional to 640,414,741.69, 960,643,377.34 and 220,231,991.45

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Solution

The fourth proportional to 640,414,741.69, 960,643,377.34 and 220,231,991.45 is: 330,355,299.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,414,741.69 : 960,643,377.34 = 220,231,991.45 : x
  2. Step 2: Convert to fraction form
    640,414,741.69/960,643,377.34 = 220,231,991.45/x
  3. Step 3: Cross multiply
    640,414,741.69x = 960,643,377.34 × 220,231,991.45
  4. Step 4: Simplify right side
    640,414,741.69x = 211,564,404,065,540,448
  5. Step 5: Solve for x
    x = 211,564,404,065,540,448/640,414,741.69
  6. Step 6: Final answer
    x = 330,355,299.92

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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.