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Finding the Fourth Proportional to 449,621.01, 620,055.23 and 288,526.77

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Solution

The fourth proportional to 449,621.01, 620,055.23 and 288,526.77 is: 397,896.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,621.01 : 620,055.23 = 288,526.77 : x
  2. Step 2: Convert to fraction form
    449,621.01/620,055.23 = 288,526.77/x
  3. Step 3: Cross multiply
    449,621.01x = 620,055.23 × 288,526.77
  4. Step 4: Simplify right side
    449,621.01x = 178,902,531,290.87
  5. Step 5: Solve for x
    x = 178,902,531,290.87/449,621.01
  6. Step 6: Final answer
    x = 397,896.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.