Home / 752,705.63-1,128,837-220,100.05

Finding the Fourth Proportional to 752,705.63, 1,128,837 and 220,100.05

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Solution

The fourth proportional to 752,705.63, 1,128,837 and 220,100.05 is: 330,085.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,705.63 : 1,128,837 = 220,100.05 : x
  2. Step 2: Convert to fraction form
    752,705.63/1,128,837 = 220,100.05/x
  3. Step 3: Cross multiply
    752,705.63x = 1,128,837 × 220,100.05
  4. Step 4: Simplify right side
    752,705.63x = 248,457,077,319.76
  5. Step 5: Solve for x
    x = 248,457,077,319.76/752,705.63
  6. Step 6: Final answer
    x = 330,085.32

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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.