Home / 853,660.68-1,280,629.99-398,706.87

Finding the Fourth Proportional to 853,660.68, 1,280,629.99 and 398,706.87

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Solution

The fourth proportional to 853,660.68, 1,280,629.99 and 398,706.87 is: 598,125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,660.68 : 1,280,629.99 = 398,706.87 : x
  2. Step 2: Convert to fraction form
    853,660.68/1,280,629.99 = 398,706.87/x
  3. Step 3: Cross multiply
    853,660.68x = 1,280,629.99 × 398,706.87
  4. Step 4: Simplify right side
    853,660.68x = 510,595,968,537.88
  5. Step 5: Solve for x
    x = 510,595,968,537.88/853,660.68
  6. Step 6: Final answer
    x = 598,125.20

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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.