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Finding the Fourth Proportional to 512,571.80, 768,857.70 and 370,854.20

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Solution

The fourth proportional to 512,571.80, 768,857.70 and 370,854.20 is: 556,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,571.80 : 768,857.70 = 370,854.20 : x
  2. Step 2: Convert to fraction form
    512,571.80/768,857.70 = 370,854.20/x
  3. Step 3: Cross multiply
    512,571.80x = 768,857.70 × 370,854.20
  4. Step 4: Simplify right side
    512,571.80x = 285,134,107,247.34
  5. Step 5: Solve for x
    x = 285,134,107,247.34/512,571.80
  6. Step 6: Final answer
    x = 556,281.30

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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.