Home / 1,355,990.79-1,871,131.07-812,112.65

Finding the Fourth Proportional to 1,355,990.79, 1,871,131.07 and 812,112.65

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Solution

The fourth proportional to 1,355,990.79, 1,871,131.07 and 812,112.65 is: 1,120,633.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,990.79 : 1,871,131.07 = 812,112.65 : x
  2. Step 2: Convert to fraction form
    1,355,990.79/1,871,131.07 = 812,112.65/x
  3. Step 3: Cross multiply
    1,355,990.79x = 1,871,131.07 × 812,112.65
  4. Step 4: Simplify right side
    1,355,990.79x = 1,519,569,211,755.04
  5. Step 5: Solve for x
    x = 1,519,569,211,755.04/1,355,990.79
  6. Step 6: Final answer
    x = 1,120,633.87

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