Home / 685,624.40-1,028,436.60-331,330.40

Finding the Fourth Proportional to 685,624.40, 1,028,436.60 and 331,330.40

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Solution

The fourth proportional to 685,624.40, 1,028,436.60 and 331,330.40 is: 496,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,624.40 : 1,028,436.60 = 331,330.40 : x
  2. Step 2: Convert to fraction form
    685,624.40/1,028,436.60 = 331,330.40/x
  3. Step 3: Cross multiply
    685,624.40x = 1,028,436.60 × 331,330.40
  4. Step 4: Simplify right side
    685,624.40x = 340,752,310,052.64
  5. Step 5: Solve for x
    x = 340,752,310,052.64/685,624.40
  6. Step 6: Final answer
    x = 496,995.60

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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.