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Finding the Fourth Proportional to 541,392.60, 809,784.90 and 485,635.80

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Solution

The fourth proportional to 541,392.60, 809,784.90 and 485,635.80 is: 726,386.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,392.60 : 809,784.90 = 485,635.80 : x
  2. Step 2: Convert to fraction form
    541,392.60/809,784.90 = 485,635.80/x
  3. Step 3: Cross multiply
    541,392.60x = 809,784.90 × 485,635.80
  4. Step 4: Simplify right side
    541,392.60x = 393,260,537,739.42
  5. Step 5: Solve for x
    x = 393,260,537,739.42/541,392.60
  6. Step 6: Final answer
    x = 726,386.98

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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.