Home / 812,118.87-1,120,710.45-449,534.94

Finding the Fourth Proportional to 812,118.87, 1,120,710.45 and 449,534.94

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Solution

The fourth proportional to 812,118.87, 1,120,710.45 and 449,534.94 is: 620,350.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,118.87 : 1,120,710.45 = 449,534.94 : x
  2. Step 2: Convert to fraction form
    812,118.87/1,120,710.45 = 449,534.94/x
  3. Step 3: Cross multiply
    812,118.87x = 1,120,710.45 × 449,534.94
  4. Step 4: Simplify right side
    812,118.87x = 503,798,504,898.12
  5. Step 5: Solve for x
    x = 503,798,504,898.12/812,118.87
  6. Step 6: Final answer
    x = 620,350.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.