Home / 853,396.52-1,280,281.85-320,917.37

Finding the Fourth Proportional to 853,396.52, 1,280,281.85 and 320,917.37

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Solution

The fourth proportional to 853,396.52, 1,280,281.85 and 320,917.37 is: 481,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,396.52 : 1,280,281.85 = 320,917.37 : x
  2. Step 2: Convert to fraction form
    853,396.52/1,280,281.85 = 320,917.37/x
  3. Step 3: Cross multiply
    853,396.52x = 1,280,281.85 × 320,917.37
  4. Step 4: Simplify right side
    853,396.52x = 410,864,676,154.74
  5. Step 5: Solve for x
    x = 410,864,676,154.74/853,396.52
  6. Step 6: Final answer
    x = 481,446.40

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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.