Home / 815,712.90-1,223,742.15-247,047.30

Finding the Fourth Proportional to 815,712.90, 1,223,742.15 and 247,047.30

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Solution

The fourth proportional to 815,712.90, 1,223,742.15 and 247,047.30 is: 370,623.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,712.90 : 1,223,742.15 = 247,047.30 : x
  2. Step 2: Convert to fraction form
    815,712.90/1,223,742.15 = 247,047.30/x
  3. Step 3: Cross multiply
    815,712.90x = 1,223,742.15 × 247,047.30
  4. Step 4: Simplify right side
    815,712.90x = 302,322,194,053.70
  5. Step 5: Solve for x
    x = 302,322,194,053.70/815,712.90
  6. Step 6: Final answer
    x = 370,623.28

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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.