Home / 628,986.80-943,480.20-329,351.60

Finding the Fourth Proportional to 628,986.80, 943,480.20 and 329,351.60

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Solution

The fourth proportional to 628,986.80, 943,480.20 and 329,351.60 is: 494,027.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,986.80 : 943,480.20 = 329,351.60 : x
  2. Step 2: Convert to fraction form
    628,986.80/943,480.20 = 329,351.60/x
  3. Step 3: Cross multiply
    628,986.80x = 943,480.20 × 329,351.60
  4. Step 4: Simplify right side
    628,986.80x = 310,736,713,438.32
  5. Step 5: Solve for x
    x = 310,736,713,438.32/628,986.80
  6. Step 6: Final answer
    x = 494,027.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.