Home / 715,383.60-987,284.30-409,555.92

Finding the Fourth Proportional to 715,383.60, 987,284.30 and 409,555.92

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Solution

The fourth proportional to 715,383.60, 987,284.30 and 409,555.92 is: 565,218.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,383.60 : 987,284.30 = 409,555.92 : x
  2. Step 2: Convert to fraction form
    715,383.60/987,284.30 = 409,555.92/x
  3. Step 3: Cross multiply
    715,383.60x = 987,284.30 × 409,555.92
  4. Step 4: Simplify right side
    715,383.60x = 404,348,129,788.06
  5. Step 5: Solve for x
    x = 404,348,129,788.06/715,383.60
  6. Step 6: Final answer
    x = 565,218.62

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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.