Home / 490,220.96-676,399.98-286,179.28

Finding the Fourth Proportional to 490,220.96, 676,399.98 and 286,179.28

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Solution

The fourth proportional to 490,220.96, 676,399.98 and 286,179.28 is: 394,866.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,220.96 : 676,399.98 = 286,179.28 : x
  2. Step 2: Convert to fraction form
    490,220.96/676,399.98 = 286,179.28/x
  3. Step 3: Cross multiply
    490,220.96x = 676,399.98 × 286,179.28
  4. Step 4: Simplify right side
    490,220.96x = 193,571,659,268.41
  5. Step 5: Solve for x
    x = 193,571,659,268.41/490,220.96
  6. Step 6: Final answer
    x = 394,866.14

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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.