Home / 1,355,986.75-1,871,125.43-812,108.61

Finding the Fourth Proportional to 1,355,986.75, 1,871,125.43 and 812,108.61

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Solution

The fourth proportional to 1,355,986.75, 1,871,125.43 and 812,108.61 is: 1,120,628.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,986.75 : 1,871,125.43 = 812,108.61 : x
  2. Step 2: Convert to fraction form
    1,355,986.75/1,871,125.43 = 812,108.61/x
  3. Step 3: Cross multiply
    1,355,986.75x = 1,871,125.43 × 812,108.61
  4. Step 4: Simplify right side
    1,355,986.75x = 1,519,557,072,092.95
  5. Step 5: Solve for x
    x = 1,519,557,072,092.95/1,355,986.75
  6. Step 6: Final answer
    x = 1,120,628.26

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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.