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Finding the Fourth Proportional to 404,311.80, 606,467.70 and 310,999.80

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Solution

The fourth proportional to 404,311.80, 606,467.70 and 310,999.80 is: 466,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,311.80 : 606,467.70 = 310,999.80 : x
  2. Step 2: Convert to fraction form
    404,311.80/606,467.70 = 310,999.80/x
  3. Step 3: Cross multiply
    404,311.80x = 606,467.70 × 310,999.80
  4. Step 4: Simplify right side
    404,311.80x = 188,611,333,406.46
  5. Step 5: Solve for x
    x = 188,611,333,406.46/404,311.80
  6. Step 6: Final answer
    x = 466,499.70

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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.