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Finding the Fourth Proportional to 554,471.20, 831,706.80 and 440,309.80

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Solution

The fourth proportional to 554,471.20, 831,706.80 and 440,309.80 is: 660,464.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,471.20 : 831,706.80 = 440,309.80 : x
  2. Step 2: Convert to fraction form
    554,471.20/831,706.80 = 440,309.80/x
  3. Step 3: Cross multiply
    554,471.20x = 831,706.80 × 440,309.80
  4. Step 4: Simplify right side
    554,471.20x = 366,208,654,766.64
  5. Step 5: Solve for x
    x = 366,208,654,766.64/554,471.20
  6. Step 6: Final answer
    x = 660,464.70

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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.