Home / 420,770,147.60-631,155,221.40-275,651,325.20

Finding the Fourth Proportional to 420,770,147.60, 631,155,221.40 and 275,651,325.20

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Solution

The fourth proportional to 420,770,147.60, 631,155,221.40 and 275,651,325.20 is: 413,476,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,770,147.60 : 631,155,221.40 = 275,651,325.20 : x
  2. Step 2: Convert to fraction form
    420,770,147.60/631,155,221.40 = 275,651,325.20/x
  3. Step 3: Cross multiply
    420,770,147.60x = 631,155,221.40 × 275,651,325.20
  4. Step 4: Simplify right side
    420,770,147.60x = 173,978,773,185,809,376
  5. Step 5: Solve for x
    x = 173,978,773,185,809,376/420,770,147.60
  6. Step 6: Final answer
    x = 413,476,987.80

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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.