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Finding the Fourth Proportional to 788,659.40, 1,183,863.90 and 489,477.80

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Solution

The fourth proportional to 788,659.40, 1,183,863.90 and 489,477.80 is: 734,759.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,659.40 : 1,183,863.90 = 489,477.80 : x
  2. Step 2: Convert to fraction form
    788,659.40/1,183,863.90 = 489,477.80/x
  3. Step 3: Cross multiply
    788,659.40x = 1,183,863.90 × 489,477.80
  4. Step 4: Simplify right side
    788,659.40x = 579,475,097,271.42
  5. Step 5: Solve for x
    x = 579,475,097,271.42/788,659.40
  6. Step 6: Final answer
    x = 734,759.64

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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.