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Finding the Fourth Proportional to 663,309.27, 915,369.81 and 376,845.06

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Solution

The fourth proportional to 663,309.27, 915,369.81 and 376,845.06 is: 520,047.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,309.27 : 915,369.81 = 376,845.06 : x
  2. Step 2: Convert to fraction form
    663,309.27/915,369.81 = 376,845.06/x
  3. Step 3: Cross multiply
    663,309.27x = 915,369.81 × 376,845.06
  4. Step 4: Simplify right side
    663,309.27x = 344,952,590,971.64
  5. Step 5: Solve for x
    x = 344,952,590,971.64/663,309.27
  6. Step 6: Final answer
    x = 520,047.90

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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.