Home / 399,228,906.60-598,843,359.90-217,830,378.60

Finding the Fourth Proportional to 399,228,906.60, 598,843,359.90 and 217,830,378.60

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Solution

The fourth proportional to 399,228,906.60, 598,843,359.90 and 217,830,378.60 is: 326,745,567.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,228,906.60 : 598,843,359.90 = 217,830,378.60 : x
  2. Step 2: Convert to fraction form
    399,228,906.60/598,843,359.90 = 217,830,378.60/x
  3. Step 3: Cross multiply
    399,228,906.60x = 598,843,359.90 × 217,830,378.60
  4. Step 4: Simplify right side
    399,228,906.60x = 130,446,275,809,113,056
  5. Step 5: Solve for x
    x = 130,446,275,809,113,056/399,228,906.60
  6. Step 6: Final answer
    x = 326,745,567.90

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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.