Home / 1,320,605.20-1,980,324.60-521,621.20

Finding the Fourth Proportional to 1,320,605.20, 1,980,324.60 and 521,621.20

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Solution

The fourth proportional to 1,320,605.20, 1,980,324.60 and 521,621.20 is: 782,201.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,605.20 : 1,980,324.60 = 521,621.20 : x
  2. Step 2: Convert to fraction form
    1,320,605.20/1,980,324.60 = 521,621.20/x
  3. Step 3: Cross multiply
    1,320,605.20x = 1,980,324.60 × 521,621.20
  4. Step 4: Simplify right side
    1,320,605.20x = 1,032,979,294,241.52
  5. Step 5: Solve for x
    x = 1,032,979,294,241.52/1,320,605.20
  6. Step 6: Final answer
    x = 782,201.44

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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.