Home / 455,400.75-628,463.03-251,451.12

Finding the Fourth Proportional to 455,400.75, 628,463.03 and 251,451.12

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Solution

The fourth proportional to 455,400.75, 628,463.03 and 251,451.12 is: 347,008.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,400.75 : 628,463.03 = 251,451.12 : x
  2. Step 2: Convert to fraction form
    455,400.75/628,463.03 = 251,451.12/x
  3. Step 3: Cross multiply
    455,400.75x = 628,463.03 × 251,451.12
  4. Step 4: Simplify right side
    455,400.75x = 158,027,731,514.84
  5. Step 5: Solve for x
    x = 158,027,731,514.84/455,400.75
  6. Step 6: Final answer
    x = 347,008.06

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1.5x scale

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.