Home / 815,718.18-1,223,196.75-310,373.22

Finding the Fourth Proportional to 815,718.18, 1,223,196.75 and 310,373.22

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Solution

The fourth proportional to 815,718.18, 1,223,196.75 and 310,373.22 is: 465,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,718.18 : 1,223,196.75 = 310,373.22 : x
  2. Step 2: Convert to fraction form
    815,718.18/1,223,196.75 = 310,373.22/x
  3. Step 3: Cross multiply
    815,718.18x = 1,223,196.75 × 310,373.22
  4. Step 4: Simplify right side
    815,718.18x = 379,647,513,991.04
  5. Step 5: Solve for x
    x = 379,647,513,991.04/815,718.18
  6. Step 6: Final answer
    x = 465,415.05

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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.