Home / 815,706.11-1,223,621.45-247,134.30

Finding the Fourth Proportional to 815,706.11, 1,223,621.45 and 247,134.30

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Solution

The fourth proportional to 815,706.11, 1,223,621.45 and 247,134.30 is: 370,720.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,706.11 : 1,223,621.45 = 247,134.30 : x
  2. Step 2: Convert to fraction form
    815,706.11/1,223,621.45 = 247,134.30/x
  3. Step 3: Cross multiply
    815,706.11x = 1,223,621.45 × 247,134.30
  4. Step 4: Simplify right side
    815,706.11x = 302,398,834,564.37
  5. Step 5: Solve for x
    x = 302,398,834,564.37/815,706.11
  6. Step 6: Final answer
    x = 370,720.33

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1.5x scale

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.