Home / 811,719.81-1,120,174.65-449,158.95

Finding the Fourth Proportional to 811,719.81, 1,120,174.65 and 449,158.95

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Solution

The fourth proportional to 811,719.81, 1,120,174.65 and 449,158.95 is: 619,840.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,719.81 : 1,120,174.65 = 449,158.95 : x
  2. Step 2: Convert to fraction form
    811,719.81/1,120,174.65 = 449,158.95/x
  3. Step 3: Cross multiply
    811,719.81x = 1,120,174.65 × 449,158.95
  4. Step 4: Simplify right side
    811,719.81x = 503,136,469,610.62
  5. Step 5: Solve for x
    x = 503,136,469,610.62/811,719.81
  6. Step 6: Final answer
    x = 619,840.08

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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.