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Finding the Fourth Proportional to 664,602.70, 996,904.05 and 309,652.60

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Solution

The fourth proportional to 664,602.70, 996,904.05 and 309,652.60 is: 464,478.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,602.70 : 996,904.05 = 309,652.60 : x
  2. Step 2: Convert to fraction form
    664,602.70/996,904.05 = 309,652.60/x
  3. Step 3: Cross multiply
    664,602.70x = 996,904.05 × 309,652.60
  4. Step 4: Simplify right side
    664,602.70x = 308,693,931,033.03
  5. Step 5: Solve for x
    x = 308,693,931,033.03/664,602.70
  6. Step 6: Final answer
    x = 464,478.90

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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.