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Finding the Fourth Proportional to 777,757.34, 1,167,901.74 and 480,129.88

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Solution

The fourth proportional to 777,757.34, 1,167,901.74 and 480,129.88 is: 720,976.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,757.34 : 1,167,901.74 = 480,129.88 : x
  2. Step 2: Convert to fraction form
    777,757.34/1,167,901.74 = 480,129.88/x
  3. Step 3: Cross multiply
    777,757.34x = 1,167,901.74 × 480,129.88
  4. Step 4: Simplify right side
    777,757.34x = 560,744,521,548.05
  5. Step 5: Solve for x
    x = 560,744,521,548.05/777,757.34
  6. Step 6: Final answer
    x = 720,976.18

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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.