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Finding the Fourth Proportional to 831,456.40, 1,245,341.40 and 332,563.60

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Solution

The fourth proportional to 831,456.40, 1,245,341.40 and 332,563.60 is: 498,108.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,456.40 : 1,245,341.40 = 332,563.60 : x
  2. Step 2: Convert to fraction form
    831,456.40/1,245,341.40 = 332,563.60/x
  3. Step 3: Cross multiply
    831,456.40x = 1,245,341.40 × 332,563.60
  4. Step 4: Simplify right side
    831,456.40x = 414,155,219,213.04
  5. Step 5: Solve for x
    x = 414,155,219,213.04/831,456.40
  6. Step 6: Final answer
    x = 498,108.16

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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.