Home / 715,736.04-987,573.78-409,909.56

Finding the Fourth Proportional to 715,736.04, 987,573.78 and 409,909.56

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Solution

The fourth proportional to 715,736.04, 987,573.78 and 409,909.56 is: 565,593.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,736.04 : 987,573.78 = 409,909.56 : x
  2. Step 2: Convert to fraction form
    715,736.04/987,573.78 = 409,909.56/x
  3. Step 3: Cross multiply
    715,736.04x = 987,573.78 × 409,909.56
  4. Step 4: Simplify right side
    715,736.04x = 404,815,933,627.34
  5. Step 5: Solve for x
    x = 404,815,933,627.34/715,736.04
  6. Step 6: Final answer
    x = 565,593.89

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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.