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Finding the Fourth Proportional to 663,601.44, 994,771.54 and 423,040.13

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Solution

The fourth proportional to 663,601.44, 994,771.54 and 423,040.13 is: 634,158.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,601.44 : 994,771.54 = 423,040.13 : x
  2. Step 2: Convert to fraction form
    663,601.44/994,771.54 = 423,040.13/x
  3. Step 3: Cross multiply
    663,601.44x = 994,771.54 × 423,040.13
  4. Step 4: Simplify right side
    663,601.44x = 420,828,274,512.84
  5. Step 5: Solve for x
    x = 420,828,274,512.84/663,601.44
  6. Step 6: Final answer
    x = 634,158.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.