Home / 341,997.89-512,918.73-128,788.29

Finding the Fourth Proportional to 341,997.89, 512,918.73 and 128,788.29

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Solution

The fourth proportional to 341,997.89, 512,918.73 and 128,788.29 is: 193,153.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,997.89 : 512,918.73 = 128,788.29 : x
  2. Step 2: Convert to fraction form
    341,997.89/512,918.73 = 128,788.29/x
  3. Step 3: Cross multiply
    341,997.89x = 512,918.73 × 128,788.29
  4. Step 4: Simplify right side
    341,997.89x = 66,057,926,145.67
  5. Step 5: Solve for x
    x = 66,057,926,145.67/341,997.89
  6. Step 6: Final answer
    x = 193,153.03

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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.