Home / 409,390.12-613,968.54-259,404.04

Finding the Fourth Proportional to 409,390.12, 613,968.54 and 259,404.04

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Solution

The fourth proportional to 409,390.12, 613,968.54 and 259,404.04 is: 389,032.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,390.12 : 613,968.54 = 259,404.04 : x
  2. Step 2: Convert to fraction form
    409,390.12/613,968.54 = 259,404.04/x
  3. Step 3: Cross multiply
    409,390.12x = 613,968.54 × 259,404.04
  4. Step 4: Simplify right side
    409,390.12x = 159,265,919,708.90
  5. Step 5: Solve for x
    x = 159,265,919,708.90/409,390.12
  6. Step 6: Final answer
    x = 389,032.15

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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.