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Finding the Fourth Proportional to 578,839.85, 867,796.12 and 275,081.57

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Solution

The fourth proportional to 578,839.85, 867,796.12 and 275,081.57 is: 412,402.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,839.85 : 867,796.12 = 275,081.57 : x
  2. Step 2: Convert to fraction form
    578,839.85/867,796.12 = 275,081.57/x
  3. Step 3: Cross multiply
    578,839.85x = 867,796.12 × 275,081.57
  4. Step 4: Simplify right side
    578,839.85x = 238,714,719,129.51
  5. Step 5: Solve for x
    x = 238,714,719,129.51/578,839.85
  6. Step 6: Final answer
    x = 412,402.01

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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.