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Finding the Fourth Proportional to 540,638.06, 811,290.60 and 274,589.51

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Solution

The fourth proportional to 540,638.06, 811,290.60 and 274,589.51 is: 412,053.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,638.06 : 811,290.60 = 274,589.51 : x
  2. Step 2: Convert to fraction form
    540,638.06/811,290.60 = 274,589.51/x
  3. Step 3: Cross multiply
    540,638.06x = 811,290.60 × 274,589.51
  4. Step 4: Simplify right side
    540,638.06x = 222,771,882,892.21
  5. Step 5: Solve for x
    x = 222,771,882,892.21/540,638.06
  6. Step 6: Final answer
    x = 412,053.65

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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.