Home / 772,121.06-1,157,786.70-322,719.30

Finding the Fourth Proportional to 772,121.06, 1,157,786.70 and 322,719.30

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Solution

The fourth proportional to 772,121.06, 1,157,786.70 and 322,719.30 is: 483,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,121.06 : 1,157,786.70 = 322,719.30 : x
  2. Step 2: Convert to fraction form
    772,121.06/1,157,786.70 = 322,719.30/x
  3. Step 3: Cross multiply
    772,121.06x = 1,157,786.70 × 322,719.30
  4. Step 4: Simplify right side
    772,121.06x = 373,640,113,373.31
  5. Step 5: Solve for x
    x = 373,640,113,373.31/772,121.06
  6. Step 6: Final answer
    x = 483,913.90

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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.