Home / 855,380.12-1,180,479.36-492,797.36

Finding the Fourth Proportional to 855,380.12, 1,180,479.36 and 492,797.36

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Solution

The fourth proportional to 855,380.12, 1,180,479.36 and 492,797.36 is: 680,091.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,380.12 : 1,180,479.36 = 492,797.36 : x
  2. Step 2: Convert to fraction form
    855,380.12/1,180,479.36 = 492,797.36/x
  3. Step 3: Cross multiply
    855,380.12x = 1,180,479.36 × 492,797.36
  4. Step 4: Simplify right side
    855,380.12x = 581,737,112,142.49
  5. Step 5: Solve for x
    x = 581,737,112,142.49/855,380.12
  6. Step 6: Final answer
    x = 680,091.92

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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.