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Finding the Fourth Proportional to 661,269.66, 990,947.13 and 455,893.50

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Solution

The fourth proportional to 661,269.66, 990,947.13 and 455,893.50 is: 683,180.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,269.66 : 990,947.13 = 455,893.50 : x
  2. Step 2: Convert to fraction form
    661,269.66/990,947.13 = 455,893.50/x
  3. Step 3: Cross multiply
    661,269.66x = 990,947.13 × 455,893.50
  4. Step 4: Simplify right side
    661,269.66x = 451,766,355,410.66
  5. Step 5: Solve for x
    x = 451,766,355,410.66/661,269.66
  6. Step 6: Final answer
    x = 683,180.23

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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.