Home / 815,763.08-1,223,668.74-389,343.84

Finding the Fourth Proportional to 815,763.08, 1,223,668.74 and 389,343.84

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Solution

The fourth proportional to 815,763.08, 1,223,668.74 and 389,343.84 is: 584,027.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,763.08 : 1,223,668.74 = 389,343.84 : x
  2. Step 2: Convert to fraction form
    815,763.08/1,223,668.74 = 389,343.84/x
  3. Step 3: Cross multiply
    815,763.08x = 1,223,668.74 × 389,343.84
  4. Step 4: Simplify right side
    815,763.08x = 476,427,886,119.56
  5. Step 5: Solve for x
    x = 476,427,886,119.56/815,763.08
  6. Step 6: Final answer
    x = 584,027.27

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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.