Home / 721,810,172.70-1,082,715,259.05-261,763,350.30

Finding the Fourth Proportional to 721,810,172.70, 1,082,715,259.05 and 261,763,350.30

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Solution

The fourth proportional to 721,810,172.70, 1,082,715,259.05 and 261,763,350.30 is: 392,645,025.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,810,172.70 : 1,082,715,259.05 = 261,763,350.30 : x
  2. Step 2: Convert to fraction form
    721,810,172.70/1,082,715,259.05 = 261,763,350.30/x
  3. Step 3: Cross multiply
    721,810,172.70x = 1,082,715,259.05 × 261,763,350.30
  4. Step 4: Simplify right side
    721,810,172.70x = 283,415,173,629,860,384
  5. Step 5: Solve for x
    x = 283,415,173,629,860,384/721,810,172.70
  6. Step 6: Final answer
    x = 392,645,025.45

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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.