Home / 715,383.10-987,283.60-409,555.41

Finding the Fourth Proportional to 715,383.10, 987,283.60 and 409,555.41

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Solution

The fourth proportional to 715,383.10, 987,283.60 and 409,555.41 is: 565,217.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,383.10 : 987,283.60 = 409,555.41 : x
  2. Step 2: Convert to fraction form
    715,383.10/987,283.60 = 409,555.41/x
  3. Step 3: Cross multiply
    715,383.10x = 987,283.60 × 409,555.41
  4. Step 4: Simplify right side
    715,383.10x = 404,347,339,584.28
  5. Step 5: Solve for x
    x = 404,347,339,584.28/715,383.10
  6. Step 6: Final answer
    x = 565,217.91

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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.