Home / 486,976.15-672,093.82-280,240.28

Finding the Fourth Proportional to 486,976.15, 672,093.82 and 280,240.28

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Solution

The fourth proportional to 486,976.15, 672,093.82 and 280,240.28 is: 386,769.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,976.15 : 672,093.82 = 280,240.28 : x
  2. Step 2: Convert to fraction form
    486,976.15/672,093.82 = 280,240.28/x
  3. Step 3: Cross multiply
    486,976.15x = 672,093.82 × 280,240.28
  4. Step 4: Simplify right side
    486,976.15x = 188,347,760,303.07
  5. Step 5: Solve for x
    x = 188,347,760,303.07/486,976.15
  6. Step 6: Final answer
    x = 386,769.99

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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.