Home / 715,078.14-986,563.38-409,043.02

Finding the Fourth Proportional to 715,078.14, 986,563.38 and 409,043.02

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Solution

The fourth proportional to 715,078.14, 986,563.38 and 409,043.02 is: 564,339.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,078.14 : 986,563.38 = 409,043.02 : x
  2. Step 2: Convert to fraction form
    715,078.14/986,563.38 = 409,043.02/x
  3. Step 3: Cross multiply
    715,078.14x = 986,563.38 × 409,043.02
  4. Step 4: Simplify right side
    715,078.14x = 403,546,864,376.61
  5. Step 5: Solve for x
    x = 403,546,864,376.61/715,078.14
  6. Step 6: Final answer
    x = 564,339.53

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Double scale
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Similar ratio
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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.