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Finding the Fourth Proportional to 455,479.90, 683,219.85 and 366,906.40

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Solution

The fourth proportional to 455,479.90, 683,219.85 and 366,906.40 is: 550,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,479.90 : 683,219.85 = 366,906.40 : x
  2. Step 2: Convert to fraction form
    455,479.90/683,219.85 = 366,906.40/x
  3. Step 3: Cross multiply
    455,479.90x = 683,219.85 × 366,906.40
  4. Step 4: Simplify right side
    455,479.90x = 250,677,735,572.04
  5. Step 5: Solve for x
    x = 250,677,735,572.04/455,479.90
  6. Step 6: Final answer
    x = 550,359.60

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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.