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Finding the Fourth Proportional to 626,338.20, 864,570.84 and 371,689.32

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Solution

The fourth proportional to 626,338.20, 864,570.84 and 371,689.32 is: 513,064.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,338.20 : 864,570.84 = 371,689.32 : x
  2. Step 2: Convert to fraction form
    626,338.20/864,570.84 = 371,689.32/x
  3. Step 3: Cross multiply
    626,338.20x = 864,570.84 × 371,689.32
  4. Step 4: Simplify right side
    626,338.20x = 321,351,747,611.43
  5. Step 5: Solve for x
    x = 321,351,747,611.43/626,338.20
  6. Step 6: Final answer
    x = 513,064.26

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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.