Home / 455,739.72-628,512.21-379,511.24

Finding the Fourth Proportional to 455,739.72, 628,512.21 and 379,511.24

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Solution

The fourth proportional to 455,739.72, 628,512.21 and 379,511.24 is: 523,385.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,739.72 : 628,512.21 = 379,511.24 : x
  2. Step 2: Convert to fraction form
    455,739.72/628,512.21 = 379,511.24/x
  3. Step 3: Cross multiply
    455,739.72x = 628,512.21 × 379,511.24
  4. Step 4: Simplify right side
    455,739.72x = 238,527,445,029.68
  5. Step 5: Solve for x
    x = 238,527,445,029.68/455,739.72
  6. Step 6: Final answer
    x = 523,385.25

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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.