Home / 1,327,696.40-1,991,314.20-485,814.80

Finding the Fourth Proportional to 1,327,696.40, 1,991,314.20 and 485,814.80

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Solution

The fourth proportional to 1,327,696.40, 1,991,314.20 and 485,814.80 is: 728,637.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,696.40 : 1,991,314.20 = 485,814.80 : x
  2. Step 2: Convert to fraction form
    1,327,696.40/1,991,314.20 = 485,814.80/x
  3. Step 3: Cross multiply
    1,327,696.40x = 1,991,314.20 × 485,814.80
  4. Step 4: Simplify right side
    1,327,696.40x = 967,409,909,810.16
  5. Step 5: Solve for x
    x = 967,409,909,810.16/1,327,696.40
  6. Step 6: Final answer
    x = 728,637.89

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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.