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Finding the Fourth Proportional to 492,776.70, 739,165.05 and 393,131.52

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Solution

The fourth proportional to 492,776.70, 739,165.05 and 393,131.52 is: 589,697.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,776.70 : 739,165.05 = 393,131.52 : x
  2. Step 2: Convert to fraction form
    492,776.70/739,165.05 = 393,131.52/x
  3. Step 3: Cross multiply
    492,776.70x = 739,165.05 × 393,131.52
  4. Step 4: Simplify right side
    492,776.70x = 290,589,079,637.38
  5. Step 5: Solve for x
    x = 290,589,079,637.38/492,776.70
  6. Step 6: Final answer
    x = 589,697.28

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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.