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Finding the Fourth Proportional to 664,591.30, 996,886.95 and 384,655.30

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Solution

The fourth proportional to 664,591.30, 996,886.95 and 384,655.30 is: 576,982.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,591.30 : 996,886.95 = 384,655.30 : x
  2. Step 2: Convert to fraction form
    664,591.30/996,886.95 = 384,655.30/x
  3. Step 3: Cross multiply
    664,591.30x = 996,886.95 × 384,655.30
  4. Step 4: Simplify right side
    664,591.30x = 383,457,848,818.34
  5. Step 5: Solve for x
    x = 383,457,848,818.34/664,591.30
  6. Step 6: Final answer
    x = 576,982.95

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