Home / 426,199,903.20-639,317,791.44-135,078,513.30

Finding the Fourth Proportional to 426,199,903.20, 639,317,791.44 and 135,078,513.30

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Solution

The fourth proportional to 426,199,903.20, 639,317,791.44 and 135,078,513.30 is: 202,623,454.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,199,903.20 : 639,317,791.44 = 135,078,513.30 : x
  2. Step 2: Convert to fraction form
    426,199,903.20/639,317,791.44 = 135,078,513.30/x
  3. Step 3: Cross multiply
    426,199,903.20x = 639,317,791.44 × 135,078,513.30
  4. Step 4: Simplify right side
    426,199,903.20x = 86,358,096,793,954,688
  5. Step 5: Solve for x
    x = 86,358,096,793,954,688/426,199,903.20
  6. Step 6: Final answer
    x = 202,623,454.73

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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.