Home / 642,099,933.90-886,043,789.28-355,999,094.37

Finding the Fourth Proportional to 642,099,933.90, 886,043,789.28 and 355,999,094.37

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Solution

The fourth proportional to 642,099,933.90, 886,043,789.28 and 355,999,094.37 is: 491,248,744.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,099,933.90 : 886,043,789.28 = 355,999,094.37 : x
  2. Step 2: Convert to fraction form
    642,099,933.90/886,043,789.28 = 355,999,094.37/x
  3. Step 3: Cross multiply
    642,099,933.90x = 886,043,789.28 × 355,999,094.37
  4. Step 4: Simplify right side
    642,099,933.90x = 315,430,786,555,843,136
  5. Step 5: Solve for x
    x = 315,430,786,555,843,136/642,099,933.90
  6. Step 6: Final answer
    x = 491,248,744.79

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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.