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Finding the Fourth Proportional to 664,477.20, 996,715.80 and 348,893.10

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Solution

The fourth proportional to 664,477.20, 996,715.80 and 348,893.10 is: 523,339.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,477.20 : 996,715.80 = 348,893.10 : x
  2. Step 2: Convert to fraction form
    664,477.20/996,715.80 = 348,893.10/x
  3. Step 3: Cross multiply
    664,477.20x = 996,715.80 × 348,893.10
  4. Step 4: Simplify right side
    664,477.20x = 347,747,265,280.98
  5. Step 5: Solve for x
    x = 347,747,265,280.98/664,477.20
  6. Step 6: Final answer
    x = 523,339.65

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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.