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Finding the Fourth Proportional to 579,811.02, 799,902.97 and 388,885.92

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Solution

The fourth proportional to 579,811.02, 799,902.97 and 388,885.92 is: 536,504.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,811.02 : 799,902.97 = 388,885.92 : x
  2. Step 2: Convert to fraction form
    579,811.02/799,902.97 = 388,885.92/x
  3. Step 3: Cross multiply
    579,811.02x = 799,902.97 × 388,885.92
  4. Step 4: Simplify right side
    579,811.02x = 311,071,002,399.18
  5. Step 5: Solve for x
    x = 311,071,002,399.18/579,811.02
  6. Step 6: Final answer
    x = 536,504.12

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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.