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Finding the Fourth Proportional to 484,435.80, 726,653.70 and 445,555.80

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Solution

The fourth proportional to 484,435.80, 726,653.70 and 445,555.80 is: 668,333.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,435.80 : 726,653.70 = 445,555.80 : x
  2. Step 2: Convert to fraction form
    484,435.80/726,653.70 = 445,555.80/x
  3. Step 3: Cross multiply
    484,435.80x = 726,653.70 × 445,555.80
  4. Step 4: Simplify right side
    484,435.80x = 323,764,770,626.46
  5. Step 5: Solve for x
    x = 323,764,770,626.46/484,435.80
  6. Step 6: Final answer
    x = 668,333.70

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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.