Home / 811,829.81-1,120,297.56-449,268.95

Finding the Fourth Proportional to 811,829.81, 1,120,297.56 and 449,268.95

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Solution

The fourth proportional to 811,829.81, 1,120,297.56 and 449,268.95 is: 619,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,829.81 : 1,120,297.56 = 449,268.95 : x
  2. Step 2: Convert to fraction form
    811,829.81/1,120,297.56 = 449,268.95/x
  3. Step 3: Cross multiply
    811,829.81x = 1,120,297.56 × 449,268.95
  4. Step 4: Simplify right side
    811,829.81x = 503,314,902,867.27
  5. Step 5: Solve for x
    x = 503,314,902,867.27/811,829.81
  6. Step 6: Final answer
    x = 619,975.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.