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Finding the Fourth Proportional to 554,604.20, 831,906.30 and 440,442.80

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Solution

The fourth proportional to 554,604.20, 831,906.30 and 440,442.80 is: 660,664.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,604.20 : 831,906.30 = 440,442.80 : x
  2. Step 2: Convert to fraction form
    554,604.20/831,906.30 = 440,442.80/x
  3. Step 3: Cross multiply
    554,604.20x = 831,906.30 × 440,442.80
  4. Step 4: Simplify right side
    554,604.20x = 366,407,140,109.64
  5. Step 5: Solve for x
    x = 366,407,140,109.64/554,604.20
  6. Step 6: Final answer
    x = 660,664.20

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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.