Home / 490,705.28-677,687.34-338,140.16

Finding the Fourth Proportional to 490,705.28, 677,687.34 and 338,140.16

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Solution

The fourth proportional to 490,705.28, 677,687.34 and 338,140.16 is: 466,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,705.28 : 677,687.34 = 338,140.16 : x
  2. Step 2: Convert to fraction form
    490,705.28/677,687.34 = 338,140.16/x
  3. Step 3: Cross multiply
    490,705.28x = 677,687.34 × 338,140.16
  4. Step 4: Simplify right side
    490,705.28x = 229,153,305,577.57
  5. Step 5: Solve for x
    x = 229,153,305,577.57/490,705.28
  6. Step 6: Final answer
    x = 466,987.65

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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.