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Finding the Fourth Proportional to 453,999.20, 680,998.80 and 288,520.80

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Solution

The fourth proportional to 453,999.20, 680,998.80 and 288,520.80 is: 432,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,999.20 : 680,998.80 = 288,520.80 : x
  2. Step 2: Convert to fraction form
    453,999.20/680,998.80 = 288,520.80/x
  3. Step 3: Cross multiply
    453,999.20x = 680,998.80 × 288,520.80
  4. Step 4: Simplify right side
    453,999.20x = 196,482,318,575.04
  5. Step 5: Solve for x
    x = 196,482,318,575.04/453,999.20
  6. Step 6: Final answer
    x = 432,781.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.