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Finding the Fourth Proportional to 386,294,652.80, 579,441,979.20 and 295,595,388.80

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Solution

The fourth proportional to 386,294,652.80, 579,441,979.20 and 295,595,388.80 is: 443,393,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,294,652.80 : 579,441,979.20 = 295,595,388.80 : x
  2. Step 2: Convert to fraction form
    386,294,652.80/579,441,979.20 = 295,595,388.80/x
  3. Step 3: Cross multiply
    386,294,652.80x = 579,441,979.20 × 295,595,388.80
  4. Step 4: Simplify right side
    386,294,652.80x = 171,280,377,128,665,536
  5. Step 5: Solve for x
    x = 171,280,377,128,665,536/386,294,652.80
  6. Step 6: Final answer
    x = 443,393,083.20

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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.