Home / 820,639.76-1,132,671.81-481,217.36

Finding the Fourth Proportional to 820,639.76, 1,132,671.81 and 481,217.36

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Solution

The fourth proportional to 820,639.76, 1,132,671.81 and 481,217.36 is: 664,190.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,639.76 : 1,132,671.81 = 481,217.36 : x
  2. Step 2: Convert to fraction form
    820,639.76/1,132,671.81 = 481,217.36/x
  3. Step 3: Cross multiply
    820,639.76x = 1,132,671.81 × 481,217.36
  4. Step 4: Simplify right side
    820,639.76x = 545,061,334,295.83
  5. Step 5: Solve for x
    x = 545,061,334,295.83/820,639.76
  6. Step 6: Final answer
    x = 664,190.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.