Home / 679,928.60-1,019,892.90-280,436.60

Finding the Fourth Proportional to 679,928.60, 1,019,892.90 and 280,436.60

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Solution

The fourth proportional to 679,928.60, 1,019,892.90 and 280,436.60 is: 420,654.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,928.60 : 1,019,892.90 = 280,436.60 : x
  2. Step 2: Convert to fraction form
    679,928.60/1,019,892.90 = 280,436.60/x
  3. Step 3: Cross multiply
    679,928.60x = 1,019,892.90 × 280,436.60
  4. Step 4: Simplify right side
    679,928.60x = 286,015,297,240.14
  5. Step 5: Solve for x
    x = 286,015,297,240.14/679,928.60
  6. Step 6: Final answer
    x = 420,654.90

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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.