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Finding the Fourth Proportional to 583,302.30, 804,268.60 and 399,628.95

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Solution

The fourth proportional to 583,302.30, 804,268.60 and 399,628.95 is: 551,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,302.30 : 804,268.60 = 399,628.95 : x
  2. Step 2: Convert to fraction form
    583,302.30/804,268.60 = 399,628.95/x
  3. Step 3: Cross multiply
    583,302.30x = 804,268.60 × 399,628.95
  4. Step 4: Simplify right side
    583,302.30x = 321,409,016,135.97
  5. Step 5: Solve for x
    x = 321,409,016,135.97/583,302.30
  6. Step 6: Final answer
    x = 551,016.20

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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.