Home / 856,311.81-1,284,648.07-323,821.05

Finding the Fourth Proportional to 856,311.81, 1,284,648.07 and 323,821.05

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Solution

The fourth proportional to 856,311.81, 1,284,648.07 and 323,821.05 is: 485,799.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,311.81 : 1,284,648.07 = 323,821.05 : x
  2. Step 2: Convert to fraction form
    856,311.81/1,284,648.07 = 323,821.05/x
  3. Step 3: Cross multiply
    856,311.81x = 1,284,648.07 × 323,821.05
  4. Step 4: Simplify right side
    856,311.81x = 415,996,078,865.53
  5. Step 5: Solve for x
    x = 415,996,078,865.53/856,311.81
  6. Step 6: Final answer
    x = 485,799.77

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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.