Home / 715,796.12-987,691.62-409,824.20

Finding the Fourth Proportional to 715,796.12, 987,691.62 and 409,824.20

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Solution

The fourth proportional to 715,796.12, 987,691.62 and 409,824.20 is: 565,496.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,796.12 : 987,691.62 = 409,824.20 : x
  2. Step 2: Convert to fraction form
    715,796.12/987,691.62 = 409,824.20/x
  3. Step 3: Cross multiply
    715,796.12x = 987,691.62 × 409,824.20
  4. Step 4: Simplify right side
    715,796.12x = 404,779,928,013.20
  5. Step 5: Solve for x
    x = 404,779,928,013.20/715,796.12
  6. Step 6: Final answer
    x = 565,496.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.