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Finding the Fourth Proportional to 869,585.80, 1,303,730.70 and 449,163.40

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Solution

The fourth proportional to 869,585.80, 1,303,730.70 and 449,163.40 is: 673,410.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,585.80 : 1,303,730.70 = 449,163.40 : x
  2. Step 2: Convert to fraction form
    869,585.80/1,303,730.70 = 449,163.40/x
  3. Step 3: Cross multiply
    869,585.80x = 1,303,730.70 × 449,163.40
  4. Step 4: Simplify right side
    869,585.80x = 585,588,113,896.38
  5. Step 5: Solve for x
    x = 585,588,113,896.38/869,585.80
  6. Step 6: Final answer
    x = 673,410.39

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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.