Home / 398,640,739.60-597,961,109.40-217,242,211.60

Finding the Fourth Proportional to 398,640,739.60, 597,961,109.40 and 217,242,211.60

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Solution

The fourth proportional to 398,640,739.60, 597,961,109.40 and 217,242,211.60 is: 325,863,317.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,640,739.60 : 597,961,109.40 = 217,242,211.60 : x
  2. Step 2: Convert to fraction form
    398,640,739.60/597,961,109.40 = 217,242,211.60/x
  3. Step 3: Cross multiply
    398,640,739.60x = 597,961,109.40 × 217,242,211.60
  4. Step 4: Simplify right side
    398,640,739.60x = 129,902,393,856,845,536
  5. Step 5: Solve for x
    x = 129,902,393,856,845,536/398,640,739.60
  6. Step 6: Final answer
    x = 325,863,317.40

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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.