Home / 1,212,070.37-1,672,660.53-728,912.25

Finding the Fourth Proportional to 1,212,070.37, 1,672,660.53 and 728,912.25

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Solution

The fourth proportional to 1,212,070.37, 1,672,660.53 and 728,912.25 is: 1,005,900.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,070.37 : 1,672,660.53 = 728,912.25 : x
  2. Step 2: Convert to fraction form
    1,212,070.37/1,672,660.53 = 728,912.25/x
  3. Step 3: Cross multiply
    1,212,070.37x = 1,672,660.53 × 728,912.25
  4. Step 4: Simplify right side
    1,212,070.37x = 1,219,222,750,408.49
  5. Step 5: Solve for x
    x = 1,219,222,750,408.49/1,212,070.37
  6. Step 6: Final answer
    x = 1,005,900.97

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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.