Home / 778,865.40-1,168,211.70-217,956.60

Finding the Fourth Proportional to 778,865.40, 1,168,211.70 and 217,956.60

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Solution

The fourth proportional to 778,865.40, 1,168,211.70 and 217,956.60 is: 326,910.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,865.40 : 1,168,211.70 = 217,956.60 : x
  2. Step 2: Convert to fraction form
    778,865.40/1,168,211.70 = 217,956.60/x
  3. Step 3: Cross multiply
    778,865.40x = 1,168,211.70 × 217,956.60
  4. Step 4: Simplify right side
    778,865.40x = 254,619,450,212.22
  5. Step 5: Solve for x
    x = 254,619,450,212.22/778,865.40
  6. Step 6: Final answer
    x = 326,910.72

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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.