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Finding the Fourth Proportional to 486,639.54, 666,685.04 and 468,445.59

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Solution

The fourth proportional to 486,639.54, 666,685.04 and 468,445.59 is: 641,759.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,639.54 : 666,685.04 = 468,445.59 : x
  2. Step 2: Convert to fraction form
    486,639.54/666,685.04 = 468,445.59/x
  3. Step 3: Cross multiply
    486,639.54x = 666,685.04 × 468,445.59
  4. Step 4: Simplify right side
    486,639.54x = 312,305,664,564.75
  5. Step 5: Solve for x
    x = 312,305,664,564.75/486,639.54
  6. Step 6: Final answer
    x = 641,759.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.