Home / 399,434,439.44-551,171,787-220,794,196.16

Finding the Fourth Proportional to 399,434,439.44, 551,171,787 and 220,794,196.16

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Solution

The fourth proportional to 399,434,439.44, 551,171,787 and 220,794,196.16 is: 304,669,601.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,434,439.44 : 551,171,787 = 220,794,196.16 : x
  2. Step 2: Convert to fraction form
    399,434,439.44/551,171,787 = 220,794,196.16/x
  3. Step 3: Cross multiply
    399,434,439.44x = 551,171,787 × 220,794,196.16
  4. Step 4: Simplify right side
    399,434,439.44x = 121,695,531,656,735,728
  5. Step 5: Solve for x
    x = 121,695,531,656,735,728/399,434,439.44
  6. Step 6: Final answer
    x = 304,669,601.92

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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.