Home / 1,274,745.69-1,912,118.73-421,588.38

Finding the Fourth Proportional to 1,274,745.69, 1,912,118.73 and 421,588.38

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Solution

The fourth proportional to 1,274,745.69, 1,912,118.73 and 421,588.38 is: 632,382.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,745.69 : 1,912,118.73 = 421,588.38 : x
  2. Step 2: Convert to fraction form
    1,274,745.69/1,912,118.73 = 421,588.38/x
  3. Step 3: Cross multiply
    1,274,745.69x = 1,912,118.73 × 421,588.38
  4. Step 4: Simplify right side
    1,274,745.69x = 806,127,037,748.36
  5. Step 5: Solve for x
    x = 806,127,037,748.36/1,274,745.69
  6. Step 6: Final answer
    x = 632,382.63

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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.