Home / 831,879.80-1,247,819.70-726,903.80

Finding the Fourth Proportional to 831,879.80, 1,247,819.70 and 726,903.80

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Solution

The fourth proportional to 831,879.80, 1,247,819.70 and 726,903.80 is: 1,090,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,879.80 : 1,247,819.70 = 726,903.80 : x
  2. Step 2: Convert to fraction form
    831,879.80/1,247,819.70 = 726,903.80/x
  3. Step 3: Cross multiply
    831,879.80x = 1,247,819.70 × 726,903.80
  4. Step 4: Simplify right side
    831,879.80x = 907,044,881,644.86
  5. Step 5: Solve for x
    x = 907,044,881,644.86/831,879.80
  6. Step 6: Final answer
    x = 1,090,355.70

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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.