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Finding the Fourth Proportional to 455,960.64, 628,899.34 and 320,024.92

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Solution

The fourth proportional to 455,960.64, 628,899.34 and 320,024.92 is: 441,405.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,960.64 : 628,899.34 = 320,024.92 : x
  2. Step 2: Convert to fraction form
    455,960.64/628,899.34 = 320,024.92/x
  3. Step 3: Cross multiply
    455,960.64x = 628,899.34 × 320,024.92
  4. Step 4: Simplify right side
    455,960.64x = 201,263,460,971.55
  5. Step 5: Solve for x
    x = 201,263,460,971.55/455,960.64
  6. Step 6: Final answer
    x = 441,405.34

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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.