Home / 628,500,665,620.80-942,750,998,431.20-430,141,375,252.80

Finding the Fourth Proportional to 628,500,665,620.80, 942,750,998,431.20 and 430,141,375,252.80

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Solution

The fourth proportional to 628,500,665,620.80, 942,750,998,431.20 and 430,141,375,252.80 is: 645,212,062,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,500,665,620.80 : 942,750,998,431.20 = 430,141,375,252.80 : x
  2. Step 2: Convert to fraction form
    628,500,665,620.80/942,750,998,431.20 = 430,141,375,252.80/x
  3. Step 3: Cross multiply
    628,500,665,620.80x = 942,750,998,431.20 × 430,141,375,252.80
  4. Step 4: Simplify right side
    628,500,665,620.80x = 405,516,210,986,146,645,147,648
  5. Step 5: Solve for x
    x = 405,516,210,986,146,645,147,648/628,500,665,620.80
  6. Step 6: Final answer
    x = 645,212,062,879.20

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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.