Home / 803,591,817.60-1,205,388,601.20-318,917,625.60

Finding the Fourth Proportional to 803,591,817.60, 1,205,388,601.20 and 318,917,625.60

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Solution

The fourth proportional to 803,591,817.60, 1,205,388,601.20 and 318,917,625.60 is: 478,376,785.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,591,817.60 : 1,205,388,601.20 = 318,917,625.60 : x
  2. Step 2: Convert to fraction form
    803,591,817.60/1,205,388,601.20 = 318,917,625.60/x
  3. Step 3: Cross multiply
    803,591,817.60x = 1,205,388,601.20 × 318,917,625.60
  4. Step 4: Simplify right side
    803,591,817.60x = 384,419,670,620,009,344
  5. Step 5: Solve for x
    x = 384,419,670,620,009,344/803,591,817.60
  6. Step 6: Final answer
    x = 478,376,785.58

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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.