Home / 685,728.56-1,028,510.94-180,328.92

Finding the Fourth Proportional to 685,728.56, 1,028,510.94 and 180,328.92

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Solution

The fourth proportional to 685,728.56, 1,028,510.94 and 180,328.92 is: 270,471.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,728.56 : 1,028,510.94 = 180,328.92 : x
  2. Step 2: Convert to fraction form
    685,728.56/1,028,510.94 = 180,328.92/x
  3. Step 3: Cross multiply
    685,728.56x = 1,028,510.94 × 180,328.92
  4. Step 4: Simplify right side
    685,728.56x = 185,470,263,837.70
  5. Step 5: Solve for x
    x = 185,470,263,837.70/685,728.56
  6. Step 6: Final answer
    x = 270,471.84

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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.