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Finding the Fourth Proportional to 576,844.40, 865,266.60 and 340,648.40

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Solution

The fourth proportional to 576,844.40, 865,266.60 and 340,648.40 is: 510,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,844.40 : 865,266.60 = 340,648.40 : x
  2. Step 2: Convert to fraction form
    576,844.40/865,266.60 = 340,648.40/x
  3. Step 3: Cross multiply
    576,844.40x = 865,266.60 × 340,648.40
  4. Step 4: Simplify right side
    576,844.40x = 294,751,682,863.44
  5. Step 5: Solve for x
    x = 294,751,682,863.44/576,844.40
  6. Step 6: Final answer
    x = 510,972.60

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.