Home / 3,878,279.19-5,818,528.76-1,320,057.81

Finding the Fourth Proportional to 3,878,279.19, 5,818,528.76 and 1,320,057.81

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Solution

The fourth proportional to 3,878,279.19, 5,818,528.76 and 1,320,057.81 is: 1,980,464.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878,279.19 : 5,818,528.76 = 1,320,057.81 : x
  2. Step 2: Convert to fraction form
    3,878,279.19/5,818,528.76 = 1,320,057.81/x
  3. Step 3: Cross multiply
    3,878,279.19x = 5,818,528.76 × 1,320,057.81
  4. Step 4: Simplify right side
    3,878,279.19x = 7,680,794,325,747.33
  5. Step 5: Solve for x
    x = 7,680,794,325,747.33/3,878,279.19
  6. Step 6: Final answer
    x = 1,980,464.52

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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.