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Finding the Fourth Proportional to 663,309.77, 915,370.51 and 376,845.57

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Solution

The fourth proportional to 663,309.77, 915,370.51 and 376,845.57 is: 520,048.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,309.77 : 915,370.51 = 376,845.57 : x
  2. Step 2: Convert to fraction form
    663,309.77/915,370.51 = 376,845.57/x
  3. Step 3: Cross multiply
    663,309.77x = 915,370.51 × 376,845.57
  4. Step 4: Simplify right side
    663,309.77x = 344,953,321,602.14
  5. Step 5: Solve for x
    x = 344,953,321,602.14/663,309.77
  6. Step 6: Final answer
    x = 520,048.61

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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.