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Finding the Fourth Proportional to 628,951.01, 867,837.08 and 370,908.90

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Solution

The fourth proportional to 628,951.01, 867,837.08 and 370,908.90 is: 511,786.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,951.01 : 867,837.08 = 370,908.90 : x
  2. Step 2: Convert to fraction form
    628,951.01/867,837.08 = 370,908.90/x
  3. Step 3: Cross multiply
    628,951.01x = 867,837.08 × 370,908.90
  4. Step 4: Simplify right side
    628,951.01x = 321,888,494,867.47
  5. Step 5: Solve for x
    x = 321,888,494,867.47/628,951.01
  6. Step 6: Final answer
    x = 511,786.28

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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.