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Finding the Fourth Proportional to 455,814.80, 683,722.20 and 123,390.80

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Solution

The fourth proportional to 455,814.80, 683,722.20 and 123,390.80 is: 185,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,814.80 : 683,722.20 = 123,390.80 : x
  2. Step 2: Convert to fraction form
    455,814.80/683,722.20 = 123,390.80/x
  3. Step 3: Cross multiply
    455,814.80x = 683,722.20 × 123,390.80
  4. Step 4: Simplify right side
    455,814.80x = 84,365,029,235.76
  5. Step 5: Solve for x
    x = 84,365,029,235.76/455,814.80
  6. Step 6: Final answer
    x = 185,086.20

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Similar ratio
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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.