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Finding the Fourth Proportional to 455,600.20, 683,400.30 and 403,112.20

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Solution

The fourth proportional to 455,600.20, 683,400.30 and 403,112.20 is: 604,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,600.20 : 683,400.30 = 403,112.20 : x
  2. Step 2: Convert to fraction form
    455,600.20/683,400.30 = 403,112.20/x
  3. Step 3: Cross multiply
    455,600.20x = 683,400.30 × 403,112.20
  4. Step 4: Simplify right side
    455,600.20x = 275,486,998,413.66
  5. Step 5: Solve for x
    x = 275,486,998,413.66/455,600.20
  6. Step 6: Final answer
    x = 604,668.30

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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.