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Finding the Fourth Proportional to 455,201.64, 628,474.14 and 407,372.76

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Solution

The fourth proportional to 455,201.64, 628,474.14 and 407,372.76 is: 562,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,201.64 : 628,474.14 = 407,372.76 : x
  2. Step 2: Convert to fraction form
    455,201.64/628,474.14 = 407,372.76/x
  3. Step 3: Cross multiply
    455,201.64x = 628,474.14 × 407,372.76
  4. Step 4: Simplify right side
    455,201.64x = 256,023,245,000.43
  5. Step 5: Solve for x
    x = 256,023,245,000.43/455,201.64
  6. Step 6: Final answer
    x = 562,439.20

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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.