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Finding the Fourth Proportional to 567,589.39, 783,279.47 and 309,464.23

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Solution

The fourth proportional to 567,589.39, 783,279.47 and 309,464.23 is: 427,063.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,589.39 : 783,279.47 = 309,464.23 : x
  2. Step 2: Convert to fraction form
    567,589.39/783,279.47 = 309,464.23/x
  3. Step 3: Cross multiply
    567,589.39x = 783,279.47 × 309,464.23
  4. Step 4: Simplify right side
    567,589.39x = 242,396,974,552.84
  5. Step 5: Solve for x
    x = 242,396,974,552.84/567,589.39
  6. Step 6: Final answer
    x = 427,063.97

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Half scale
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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.