Home / 1,081,273.86-1,620,907.20-512,921.57

Finding the Fourth Proportional to 1,081,273.86, 1,620,907.20 and 512,921.57

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Solution

The fourth proportional to 1,081,273.86, 1,620,907.20 and 512,921.57 is: 768,906.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081,273.86 : 1,620,907.20 = 512,921.57 : x
  2. Step 2: Convert to fraction form
    1,081,273.86/1,620,907.20 = 512,921.57/x
  3. Step 3: Cross multiply
    1,081,273.86x = 1,620,907.20 × 512,921.57
  4. Step 4: Simplify right side
    1,081,273.86x = 831,398,257,743.77
  5. Step 5: Solve for x
    x = 831,398,257,743.77/1,081,273.86
  6. Step 6: Final answer
    x = 768,906.28

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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.