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Finding the Fourth Proportional to 688,609.28, 950,279.28 and 382,684.64

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Solution

The fourth proportional to 688,609.28, 950,279.28 and 382,684.64 is: 528,103.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,609.28 : 950,279.28 = 382,684.64 : x
  2. Step 2: Convert to fraction form
    688,609.28/950,279.28 = 382,684.64/x
  3. Step 3: Cross multiply
    688,609.28x = 950,279.28 × 382,684.64
  4. Step 4: Simplify right side
    688,609.28x = 363,657,284,166.26
  5. Step 5: Solve for x
    x = 363,657,284,166.26/688,609.28
  6. Step 6: Final answer
    x = 528,103.95

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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.