Home / 856,020.15-1,282,286.30-405,374.63

Finding the Fourth Proportional to 856,020.15, 1,282,286.30 and 405,374.63

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Solution

The fourth proportional to 856,020.15, 1,282,286.30 and 405,374.63 is: 607,236.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,020.15 : 1,282,286.30 = 405,374.63 : x
  2. Step 2: Convert to fraction form
    856,020.15/1,282,286.30 = 405,374.63/x
  3. Step 3: Cross multiply
    856,020.15x = 1,282,286.30 × 405,374.63
  4. Step 4: Simplify right side
    856,020.15x = 519,806,325,978.26
  5. Step 5: Solve for x
    x = 519,806,325,978.26/856,020.15
  6. Step 6: Final answer
    x = 607,236.09

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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.