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Finding the Fourth Proportional to 512,364.20, 768,546.30 and 453,315.20

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Solution

The fourth proportional to 512,364.20, 768,546.30 and 453,315.20 is: 679,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,364.20 : 768,546.30 = 453,315.20 : x
  2. Step 2: Convert to fraction form
    512,364.20/768,546.30 = 453,315.20/x
  3. Step 3: Cross multiply
    512,364.20x = 768,546.30 × 453,315.20
  4. Step 4: Simplify right side
    512,364.20x = 348,393,719,693.76
  5. Step 5: Solve for x
    x = 348,393,719,693.76/512,364.20
  6. Step 6: Final answer
    x = 679,972.80

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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.