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Finding the Fourth Proportional to 664,702.76, 917,285.13 and 362,896.76

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Solution

The fourth proportional to 664,702.76, 917,285.13 and 362,896.76 is: 500,794.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,702.76 : 917,285.13 = 362,896.76 : x
  2. Step 2: Convert to fraction form
    664,702.76/917,285.13 = 362,896.76/x
  3. Step 3: Cross multiply
    664,702.76x = 917,285.13 × 362,896.76
  4. Step 4: Simplify right side
    664,702.76x = 332,879,801,673.18
  5. Step 5: Solve for x
    x = 332,879,801,673.18/664,702.76
  6. Step 6: Final answer
    x = 500,794.97

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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.