Home / 679,756.68-1,019,568.96-206,446.20

Finding the Fourth Proportional to 679,756.68, 1,019,568.96 and 206,446.20

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Solution

The fourth proportional to 679,756.68, 1,019,568.96 and 206,446.20 is: 309,649.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,756.68 : 1,019,568.96 = 206,446.20 : x
  2. Step 2: Convert to fraction form
    679,756.68/1,019,568.96 = 206,446.20/x
  3. Step 3: Cross multiply
    679,756.68x = 1,019,568.96 × 206,446.20
  4. Step 4: Simplify right side
    679,756.68x = 210,486,137,429.95
  5. Step 5: Solve for x
    x = 210,486,137,429.95/679,756.68
  6. Step 6: Final answer
    x = 309,649.24

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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.