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Finding the Fourth Proportional to 455,751.12, 628,738.94 and 274,357.94

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Solution

The fourth proportional to 455,751.12, 628,738.94 and 274,357.94 is: 378,495.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,751.12 : 628,738.94 = 274,357.94 : x
  2. Step 2: Convert to fraction form
    455,751.12/628,738.94 = 274,357.94/x
  3. Step 3: Cross multiply
    455,751.12x = 628,738.94 × 274,357.94
  4. Step 4: Simplify right side
    455,751.12x = 172,499,523,223.37
  5. Step 5: Solve for x
    x = 172,499,523,223.37/455,751.12
  6. Step 6: Final answer
    x = 378,495.01

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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.