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Finding the Fourth Proportional to 628,397.89, 867,252.92 and 370,357.92

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Solution

The fourth proportional to 628,397.89, 867,252.92 and 370,357.92 is: 511,131.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,397.89 : 867,252.92 = 370,357.92 : x
  2. Step 2: Convert to fraction form
    628,397.89/867,252.92 = 370,357.92/x
  3. Step 3: Cross multiply
    628,397.89x = 867,252.92 × 370,357.92
  4. Step 4: Simplify right side
    628,397.89x = 321,193,985,713.34
  5. Step 5: Solve for x
    x = 321,193,985,713.34/628,397.89
  6. Step 6: Final answer
    x = 511,131.55

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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.