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Finding the Fourth Proportional to 691,647.54, 954,471.72 and 385,724.26

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Solution

The fourth proportional to 691,647.54, 954,471.72 and 385,724.26 is: 532,298.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,647.54 : 954,471.72 = 385,724.26 : x
  2. Step 2: Convert to fraction form
    691,647.54/954,471.72 = 385,724.26/x
  3. Step 3: Cross multiply
    691,647.54x = 954,471.72 × 385,724.26
  4. Step 4: Simplify right side
    691,647.54x = 368,162,897,887.93
  5. Step 5: Solve for x
    x = 368,162,897,887.93/691,647.54
  6. Step 6: Final answer
    x = 532,298.43

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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.