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Finding the Fourth Proportional to 628,494.26, 867,415.50 and 370,288.66

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Solution

The fourth proportional to 628,494.26, 867,415.50 and 370,288.66 is: 511,053.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,494.26 : 867,415.50 = 370,288.66 : x
  2. Step 2: Convert to fraction form
    628,494.26/867,415.50 = 370,288.66/x
  3. Step 3: Cross multiply
    628,494.26x = 867,415.50 × 370,288.66
  4. Step 4: Simplify right side
    628,494.26x = 321,194,123,158.23
  5. Step 5: Solve for x
    x = 321,194,123,158.23/628,494.26
  6. Step 6: Final answer
    x = 511,053.39

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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.