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Finding the Fourth Proportional to 663,309.51, 915,370.16 and 376,845.32

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Solution

The fourth proportional to 663,309.51, 915,370.16 and 376,845.32 is: 520,048.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,309.51 : 915,370.16 = 376,845.32 : x
  2. Step 2: Convert to fraction form
    663,309.51/915,370.16 = 376,845.32/x
  3. Step 3: Cross multiply
    663,309.51x = 915,370.16 × 376,845.32
  4. Step 4: Simplify right side
    663,309.51x = 344,952,960,863.65
  5. Step 5: Solve for x
    x = 344,952,960,863.65/663,309.51
  6. Step 6: Final answer
    x = 520,048.27

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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.