Home / 486,976.25-672,093.99-280,240.40

Finding the Fourth Proportional to 486,976.25, 672,093.99 and 280,240.40

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Solution

The fourth proportional to 486,976.25, 672,093.99 and 280,240.40 is: 386,770.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,976.25 : 672,093.99 = 280,240.40 : x
  2. Step 2: Convert to fraction form
    486,976.25/672,093.99 = 280,240.40/x
  3. Step 3: Cross multiply
    486,976.25x = 672,093.99 × 280,240.40
  4. Step 4: Simplify right side
    486,976.25x = 188,347,890,275.43
  5. Step 5: Solve for x
    x = 188,347,890,275.43/486,976.25
  6. Step 6: Final answer
    x = 386,770.17

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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.