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Finding the Fourth Proportional to 869,627.80, 1,303,793.70 and 449,205.40

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Solution

The fourth proportional to 869,627.80, 1,303,793.70 and 449,205.40 is: 673,473.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,627.80 : 1,303,793.70 = 449,205.40 : x
  2. Step 2: Convert to fraction form
    869,627.80/1,303,793.70 = 449,205.40/x
  3. Step 3: Cross multiply
    869,627.80x = 1,303,793.70 × 449,205.40
  4. Step 4: Simplify right side
    869,627.80x = 585,671,170,525.98
  5. Step 5: Solve for x
    x = 585,671,170,525.98/869,627.80
  6. Step 6: Final answer
    x = 673,473.38

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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.