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Finding the Fourth Proportional to 608,426.98, 839,887.77 and 379,097.57

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Solution

The fourth proportional to 608,426.98, 839,887.77 and 379,097.57 is: 523,315.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,426.98 : 839,887.77 = 379,097.57 : x
  2. Step 2: Convert to fraction form
    608,426.98/839,887.77 = 379,097.57/x
  3. Step 3: Cross multiply
    608,426.98x = 839,887.77 × 379,097.57
  4. Step 4: Simplify right side
    608,426.98x = 318,399,412,679.72
  5. Step 5: Solve for x
    x = 318,399,412,679.72/608,426.98
  6. Step 6: Final answer
    x = 523,315.74

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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.