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Finding the Fourth Proportional to 455,489.90, 683,234.85 and 366,916.40

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Solution

The fourth proportional to 455,489.90, 683,234.85 and 366,916.40 is: 550,374.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,489.90 : 683,234.85 = 366,916.40 : x
  2. Step 2: Convert to fraction form
    455,489.90/683,234.85 = 366,916.40/x
  3. Step 3: Cross multiply
    455,489.90x = 683,234.85 × 366,916.40
  4. Step 4: Simplify right side
    455,489.90x = 250,690,071,516.54
  5. Step 5: Solve for x
    x = 250,690,071,516.54/455,489.90
  6. Step 6: Final answer
    x = 550,374.60

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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.