Home / 1,420,601.12-2,130,887.09-821,180.87

Finding the Fourth Proportional to 1,420,601.12, 2,130,887.09 and 821,180.87

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Solution

The fourth proportional to 1,420,601.12, 2,130,887.09 and 821,180.87 is: 1,231,762.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,601.12 : 2,130,887.09 = 821,180.87 : x
  2. Step 2: Convert to fraction form
    1,420,601.12/2,130,887.09 = 821,180.87/x
  3. Step 3: Cross multiply
    1,420,601.12x = 2,130,887.09 × 821,180.87
  4. Step 4: Simplify right side
    1,420,601.12x = 1,749,843,703,783.53
  5. Step 5: Solve for x
    x = 1,749,843,703,783.53/1,420,601.12
  6. Step 6: Final answer
    x = 1,231,762.87

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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.