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Finding the Fourth Proportional to 512,444.20, 768,666.30 and 276,248.20

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Solution

The fourth proportional to 512,444.20, 768,666.30 and 276,248.20 is: 414,372.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,444.20 : 768,666.30 = 276,248.20 : x
  2. Step 2: Convert to fraction form
    512,444.20/768,666.30 = 276,248.20/x
  3. Step 3: Cross multiply
    512,444.20x = 768,666.30 × 276,248.20
  4. Step 4: Simplify right side
    512,444.20x = 212,342,681,775.66
  5. Step 5: Solve for x
    x = 212,342,681,775.66/512,444.20
  6. Step 6: Final answer
    x = 414,372.30

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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.