Home / 1,320,172.53-1,821,775.10-810,776.49

Finding the Fourth Proportional to 1,320,172.53, 1,821,775.10 and 810,776.49

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Solution

The fourth proportional to 1,320,172.53, 1,821,775.10 and 810,776.49 is: 1,118,832.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,172.53 : 1,821,775.10 = 810,776.49 : x
  2. Step 2: Convert to fraction form
    1,320,172.53/1,821,775.10 = 810,776.49/x
  3. Step 3: Cross multiply
    1,320,172.53x = 1,821,775.10 × 810,776.49
  4. Step 4: Simplify right side
    1,320,172.53x = 1,477,052,414,822.48
  5. Step 5: Solve for x
    x = 1,477,052,414,822.48/1,320,172.53
  6. Step 6: Final answer
    x = 1,118,832.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.