Home / 2,189,059.32-3,020,975.28-1,222,201.20

Finding the Fourth Proportional to 2,189,059.32, 3,020,975.28 and 1,222,201.20

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Solution

The fourth proportional to 2,189,059.32, 3,020,975.28 and 1,222,201.20 is: 1,686,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189,059.32 : 3,020,975.28 = 1,222,201.20 : x
  2. Step 2: Convert to fraction form
    2,189,059.32/3,020,975.28 = 1,222,201.20/x
  3. Step 3: Cross multiply
    2,189,059.32x = 3,020,975.28 × 1,222,201.20
  4. Step 4: Simplify right side
    2,189,059.32x = 3,692,239,612,386.34
  5. Step 5: Solve for x
    x = 3,692,239,612,386.34/2,189,059.32
  6. Step 6: Final answer
    x = 1,686,678.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.