Home / 1,977,538.40-2,729,009.04-1,072,121.12

Finding the Fourth Proportional to 1,977,538.40, 2,729,009.04 and 1,072,121.12

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Solution

The fourth proportional to 1,977,538.40, 2,729,009.04 and 1,072,121.12 is: 1,479,530.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977,538.40 : 2,729,009.04 = 1,072,121.12 : x
  2. Step 2: Convert to fraction form
    1,977,538.40/2,729,009.04 = 1,072,121.12/x
  3. Step 3: Cross multiply
    1,977,538.40x = 2,729,009.04 × 1,072,121.12
  4. Step 4: Simplify right side
    1,977,538.40x = 2,925,828,228,454.93
  5. Step 5: Solve for x
    x = 2,925,828,228,454.93/1,977,538.40
  6. Step 6: Final answer
    x = 1,479,530.42

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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.