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Finding the Fourth Proportional to 646,857.60, 970,286.40 and 366,921.60

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Solution

The fourth proportional to 646,857.60, 970,286.40 and 366,921.60 is: 550,382.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,857.60 : 970,286.40 = 366,921.60 : x
  2. Step 2: Convert to fraction form
    646,857.60/970,286.40 = 366,921.60/x
  3. Step 3: Cross multiply
    646,857.60x = 970,286.40 × 366,921.60
  4. Step 4: Simplify right side
    646,857.60x = 356,019,038,346.24
  5. Step 5: Solve for x
    x = 356,019,038,346.24/646,857.60
  6. Step 6: Final answer
    x = 550,382.40

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Double scale
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Similar ratio
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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.