Home / 858,136.10-1,286,815.35-325,480.10

Finding the Fourth Proportional to 858,136.10, 1,286,815.35 and 325,480.10

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Solution

The fourth proportional to 858,136.10, 1,286,815.35 and 325,480.10 is: 488,072.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,136.10 : 1,286,815.35 = 325,480.10 : x
  2. Step 2: Convert to fraction form
    858,136.10/1,286,815.35 = 325,480.10/x
  3. Step 3: Cross multiply
    858,136.10x = 1,286,815.35 × 325,480.10
  4. Step 4: Simplify right side
    858,136.10x = 418,832,788,799.54
  5. Step 5: Solve for x
    x = 418,832,788,799.54/858,136.10
  6. Step 6: Final answer
    x = 488,072.68

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1.5x scale

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.