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Finding the Fourth Proportional to 664,279.10, 996,418.65 and 451,702.70

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Solution

The fourth proportional to 664,279.10, 996,418.65 and 451,702.70 is: 677,554.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,279.10 : 996,418.65 = 451,702.70 : x
  2. Step 2: Convert to fraction form
    664,279.10/996,418.65 = 451,702.70/x
  3. Step 3: Cross multiply
    664,279.10x = 996,418.65 × 451,702.70
  4. Step 4: Simplify right side
    664,279.10x = 450,084,994,535.36
  5. Step 5: Solve for x
    x = 450,084,994,535.36/664,279.10
  6. Step 6: Final answer
    x = 677,554.05

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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.