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Finding the Fourth Proportional to 484,043.80, 726,065.70 and 445,336.60

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Solution

The fourth proportional to 484,043.80, 726,065.70 and 445,336.60 is: 668,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,043.80 : 726,065.70 = 445,336.60 : x
  2. Step 2: Convert to fraction form
    484,043.80/726,065.70 = 445,336.60/x
  3. Step 3: Cross multiply
    484,043.80x = 726,065.70 × 445,336.60
  4. Step 4: Simplify right side
    484,043.80x = 323,343,630,214.62
  5. Step 5: Solve for x
    x = 323,343,630,214.62/484,043.80
  6. Step 6: Final answer
    x = 668,004.90

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Similar ratio
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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.