Home / 782,107.40-1,174,586.70-684,129.80

Finding the Fourth Proportional to 782,107.40, 1,174,586.70 and 684,129.80

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Solution

The fourth proportional to 782,107.40, 1,174,586.70 and 684,129.80 is: 1,027,441.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,107.40 : 1,174,586.70 = 684,129.80 : x
  2. Step 2: Convert to fraction form
    782,107.40/1,174,586.70 = 684,129.80/x
  3. Step 3: Cross multiply
    782,107.40x = 1,174,586.70 × 684,129.80
  4. Step 4: Simplify right side
    782,107.40x = 803,569,764,153.66
  5. Step 5: Solve for x
    x = 803,569,764,153.66/782,107.40
  6. Step 6: Final answer
    x = 1,027,441.71

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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.