Home / 890,999.80-1,336,499.70-322,379.80

Finding the Fourth Proportional to 890,999.80, 1,336,499.70 and 322,379.80

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Solution

The fourth proportional to 890,999.80, 1,336,499.70 and 322,379.80 is: 483,569.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,999.80 : 1,336,499.70 = 322,379.80 : x
  2. Step 2: Convert to fraction form
    890,999.80/1,336,499.70 = 322,379.80/x
  3. Step 3: Cross multiply
    890,999.80x = 1,336,499.70 × 322,379.80
  4. Step 4: Simplify right side
    890,999.80x = 430,860,505,986.06
  5. Step 5: Solve for x
    x = 430,860,505,986.06/890,999.80
  6. Step 6: Final answer
    x = 483,569.70

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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.