Home / 679,906.40-1,019,859.60-325,612.40

Finding the Fourth Proportional to 679,906.40, 1,019,859.60 and 325,612.40

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Solution

The fourth proportional to 679,906.40, 1,019,859.60 and 325,612.40 is: 488,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,906.40 : 1,019,859.60 = 325,612.40 : x
  2. Step 2: Convert to fraction form
    679,906.40/1,019,859.60 = 325,612.40/x
  3. Step 3: Cross multiply
    679,906.40x = 1,019,859.60 × 325,612.40
  4. Step 4: Simplify right side
    679,906.40x = 332,078,932,019.04
  5. Step 5: Solve for x
    x = 332,078,932,019.04/679,906.40
  6. Step 6: Final answer
    x = 488,418.60

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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.