Home / 679,941.60-1,019,912.40-280,449.60

Finding the Fourth Proportional to 679,941.60, 1,019,912.40 and 280,449.60

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Solution

The fourth proportional to 679,941.60, 1,019,912.40 and 280,449.60 is: 420,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,941.60 : 1,019,912.40 = 280,449.60 : x
  2. Step 2: Convert to fraction form
    679,941.60/1,019,912.40 = 280,449.60/x
  3. Step 3: Cross multiply
    679,941.60x = 1,019,912.40 × 280,449.60
  4. Step 4: Simplify right side
    679,941.60x = 286,034,024,615.04
  5. Step 5: Solve for x
    x = 286,034,024,615.04/679,941.60
  6. Step 6: Final answer
    x = 420,674.40

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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.