Home / 455,977.98-628,923.27-320,042.25

Finding the Fourth Proportional to 455,977.98, 628,923.27 and 320,042.25

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Solution

The fourth proportional to 455,977.98, 628,923.27 and 320,042.25 is: 441,429.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,977.98 : 628,923.27 = 320,042.25 : x
  2. Step 2: Convert to fraction form
    455,977.98/628,923.27 = 320,042.25/x
  3. Step 3: Cross multiply
    455,977.98x = 628,923.27 × 320,042.25
  4. Step 4: Simplify right side
    455,977.98x = 201,282,018,408.16
  5. Step 5: Solve for x
    x = 201,282,018,408.16/455,977.98
  6. Step 6: Final answer
    x = 441,429.25

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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.