Home / 646,867.20-970,300.80-203,577.60

Finding the Fourth Proportional to 646,867.20, 970,300.80 and 203,577.60

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Solution

The fourth proportional to 646,867.20, 970,300.80 and 203,577.60 is: 305,366.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,867.20 : 970,300.80 = 203,577.60 : x
  2. Step 2: Convert to fraction form
    646,867.20/970,300.80 = 203,577.60/x
  3. Step 3: Cross multiply
    646,867.20x = 970,300.80 × 203,577.60
  4. Step 4: Simplify right side
    646,867.20x = 197,531,508,142.08
  5. Step 5: Solve for x
    x = 197,531,508,142.08/646,867.20
  6. Step 6: Final answer
    x = 305,366.40

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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.