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Finding the Fourth Proportional to 522,811.20, 784,216.80 and 493,780.80

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Solution

The fourth proportional to 522,811.20, 784,216.80 and 493,780.80 is: 740,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,811.20 : 784,216.80 = 493,780.80 : x
  2. Step 2: Convert to fraction form
    522,811.20/784,216.80 = 493,780.80/x
  3. Step 3: Cross multiply
    522,811.20x = 784,216.80 × 493,780.80
  4. Step 4: Simplify right side
    522,811.20x = 387,231,198,877.44
  5. Step 5: Solve for x
    x = 387,231,198,877.44/522,811.20
  6. Step 6: Final answer
    x = 740,671.20

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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.