Home / 679,418.20-1,019,904.90-399,093.40

Finding the Fourth Proportional to 679,418.20, 1,019,904.90 and 399,093.40

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Solution

The fourth proportional to 679,418.20, 1,019,904.90 and 399,093.40 is: 599,096.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,418.20 : 1,019,904.90 = 399,093.40 : x
  2. Step 2: Convert to fraction form
    679,418.20/1,019,904.90 = 399,093.40/x
  3. Step 3: Cross multiply
    679,418.20x = 1,019,904.90 × 399,093.40
  4. Step 4: Simplify right side
    679,418.20x = 407,037,314,217.66
  5. Step 5: Solve for x
    x = 407,037,314,217.66/679,418.20
  6. Step 6: Final answer
    x = 599,096.87

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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.