Home / 831,290.40-1,246,935.60-298,828.80

Finding the Fourth Proportional to 831,290.40, 1,246,935.60 and 298,828.80

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Solution

The fourth proportional to 831,290.40, 1,246,935.60 and 298,828.80 is: 448,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,290.40 : 1,246,935.60 = 298,828.80 : x
  2. Step 2: Convert to fraction form
    831,290.40/1,246,935.60 = 298,828.80/x
  3. Step 3: Cross multiply
    831,290.40x = 1,246,935.60 × 298,828.80
  4. Step 4: Simplify right side
    831,290.40x = 372,620,269,025.28
  5. Step 5: Solve for x
    x = 372,620,269,025.28/831,290.40
  6. Step 6: Final answer
    x = 448,243.20

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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.