Home / 645,777.56-968,656.60-290,540.72

Finding the Fourth Proportional to 645,777.56, 968,656.60 and 290,540.72

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Solution

The fourth proportional to 645,777.56, 968,656.60 and 290,540.72 is: 435,806.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,777.56 : 968,656.60 = 290,540.72 : x
  2. Step 2: Convert to fraction form
    645,777.56/968,656.60 = 290,540.72/x
  3. Step 3: Cross multiply
    645,777.56x = 968,656.60 × 290,540.72
  4. Step 4: Simplify right side
    645,777.56x = 281,434,185,996.75
  5. Step 5: Solve for x
    x = 281,434,185,996.75/645,777.56
  6. Step 6: Final answer
    x = 435,806.70

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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.