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Finding the Fourth Proportional to 612,463.98, 918,097.28 and 275,589.44

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Solution

The fourth proportional to 612,463.98, 918,097.28 and 275,589.44 is: 413,114.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,463.98 : 918,097.28 = 275,589.44 : x
  2. Step 2: Convert to fraction form
    612,463.98/918,097.28 = 275,589.44/x
  3. Step 3: Cross multiply
    612,463.98x = 918,097.28 × 275,589.44
  4. Step 4: Simplify right side
    612,463.98x = 253,017,915,318.81
  5. Step 5: Solve for x
    x = 253,017,915,318.81/612,463.98
  6. Step 6: Final answer
    x = 413,114.77

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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.