Home / 481,290.75-664,356.21-280,086.75

Finding the Fourth Proportional to 481,290.75, 664,356.21 and 280,086.75

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Solution

The fourth proportional to 481,290.75, 664,356.21 and 280,086.75 is: 386,621.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,290.75 : 664,356.21 = 280,086.75 : x
  2. Step 2: Convert to fraction form
    481,290.75/664,356.21 = 280,086.75/x
  3. Step 3: Cross multiply
    481,290.75x = 664,356.21 × 280,086.75
  4. Step 4: Simplify right side
    481,290.75x = 186,077,371,701.22
  5. Step 5: Solve for x
    x = 186,077,371,701.22/481,290.75
  6. Step 6: Final answer
    x = 386,621.54

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1.5x scale

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.