Home / 831,640.30-1,247,460.45-726,664.30

Finding the Fourth Proportional to 831,640.30, 1,247,460.45 and 726,664.30

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Solution

The fourth proportional to 831,640.30, 1,247,460.45 and 726,664.30 is: 1,089,996.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,640.30 : 1,247,460.45 = 726,664.30 : x
  2. Step 2: Convert to fraction form
    831,640.30/1,247,460.45 = 726,664.30/x
  3. Step 3: Cross multiply
    831,640.30x = 1,247,460.45 × 726,664.30
  4. Step 4: Simplify right side
    831,640.30x = 906,484,974,676.94
  5. Step 5: Solve for x
    x = 906,484,974,676.94/831,640.30
  6. Step 6: Final answer
    x = 1,089,996.45

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Double scale
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1.5x scale

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.