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Finding the Fourth Proportional to 512,556.80, 768,835.20 and 370,839.20

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Solution

The fourth proportional to 512,556.80, 768,835.20 and 370,839.20 is: 556,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,556.80 : 768,835.20 = 370,839.20 : x
  2. Step 2: Convert to fraction form
    512,556.80/768,835.20 = 370,839.20/x
  3. Step 3: Cross multiply
    512,556.80x = 768,835.20 × 370,839.20
  4. Step 4: Simplify right side
    512,556.80x = 285,114,230,499.84
  5. Step 5: Solve for x
    x = 285,114,230,499.84/512,556.80
  6. Step 6: Final answer
    x = 556,258.80

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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.