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Finding the Fourth Proportional to 856,801.60, 1,284,813.60 and 324,145.60

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Solution

The fourth proportional to 856,801.60, 1,284,813.60 and 324,145.60 is: 486,071.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,801.60 : 1,284,813.60 = 324,145.60 : x
  2. Step 2: Convert to fraction form
    856,801.60/1,284,813.60 = 324,145.60/x
  3. Step 3: Cross multiply
    856,801.60x = 1,284,813.60 × 324,145.60
  4. Step 4: Simplify right side
    856,801.60x = 416,466,675,260.16
  5. Step 5: Solve for x
    x = 416,466,675,260.16/856,801.60
  6. Step 6: Final answer
    x = 486,071.31

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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.