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Finding the Fourth Proportional to 704,804.11, 972,629.26 and 398,874.94

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Solution

The fourth proportional to 704,804.11, 972,629.26 and 398,874.94 is: 550,447.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,804.11 : 972,629.26 = 398,874.94 : x
  2. Step 2: Convert to fraction form
    704,804.11/972,629.26 = 398,874.94/x
  3. Step 3: Cross multiply
    704,804.11x = 972,629.26 × 398,874.94
  4. Step 4: Simplify right side
    704,804.11x = 387,957,434,295.98
  5. Step 5: Solve for x
    x = 387,957,434,295.98/704,804.11
  6. Step 6: Final answer
    x = 550,447.18

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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.