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Finding the Fourth Proportional to 450,380.88, 620,811 and 354,736.08

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Solution

The fourth proportional to 450,380.88, 620,811 and 354,736.08 is: 488,972.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,380.88 : 620,811 = 354,736.08 : x
  2. Step 2: Convert to fraction form
    450,380.88/620,811 = 354,736.08/x
  3. Step 3: Cross multiply
    450,380.88x = 620,811 × 354,736.08
  4. Step 4: Simplify right side
    450,380.88x = 220,224,060,560.88
  5. Step 5: Solve for x
    x = 220,224,060,560.88/450,380.88
  6. Step 6: Final answer
    x = 488,972.93

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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.