Home / 853,706.22-1,280,384.34-313,776.42

Finding the Fourth Proportional to 853,706.22, 1,280,384.34 and 313,776.42

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Solution

The fourth proportional to 853,706.22, 1,280,384.34 and 313,776.42 is: 470,600.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,706.22 : 1,280,384.34 = 313,776.42 : x
  2. Step 2: Convert to fraction form
    853,706.22/1,280,384.34 = 313,776.42/x
  3. Step 3: Cross multiply
    853,706.22x = 1,280,384.34 × 313,776.42
  4. Step 4: Simplify right side
    853,706.22x = 401,754,414,429.26
  5. Step 5: Solve for x
    x = 401,754,414,429.26/853,706.22
  6. Step 6: Final answer
    x = 470,600.31

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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.