Home / 853,393.74-1,280,277.69-320,914.59

Finding the Fourth Proportional to 853,393.74, 1,280,277.69 and 320,914.59

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Solution

The fourth proportional to 853,393.74, 1,280,277.69 and 320,914.59 is: 481,442.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,393.74 : 1,280,277.69 = 320,914.59 : x
  2. Step 2: Convert to fraction form
    853,393.74/1,280,277.69 = 320,914.59/x
  3. Step 3: Cross multiply
    853,393.74x = 1,280,277.69 × 320,914.59
  4. Step 4: Simplify right side
    853,393.74x = 410,859,789,972.50
  5. Step 5: Solve for x
    x = 410,859,789,972.50/853,393.74
  6. Step 6: Final answer
    x = 481,442.24

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Double scale
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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.