Home / 679,682.32-1,019,457.51-206,371.78

Finding the Fourth Proportional to 679,682.32, 1,019,457.51 and 206,371.78

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Solution

The fourth proportional to 679,682.32, 1,019,457.51 and 206,371.78 is: 309,537.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,682.32 : 1,019,457.51 = 206,371.78 : x
  2. Step 2: Convert to fraction form
    679,682.32/1,019,457.51 = 206,371.78/x
  3. Step 3: Cross multiply
    679,682.32x = 1,019,457.51 × 206,371.78
  4. Step 4: Simplify right side
    679,682.32x = 210,387,260,973.07
  5. Step 5: Solve for x
    x = 210,387,260,973.07/679,682.32
  6. Step 6: Final answer
    x = 309,537.64

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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.