Home / 1,286,974.80-1,932,017.40-1,277,643.60

Finding the Fourth Proportional to 1,286,974.80, 1,932,017.40 and 1,277,643.60

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Solution

The fourth proportional to 1,286,974.80, 1,932,017.40 and 1,277,643.60 is: 1,918,009.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,974.80 : 1,932,017.40 = 1,277,643.60 : x
  2. Step 2: Convert to fraction form
    1,286,974.80/1,932,017.40 = 1,277,643.60/x
  3. Step 3: Cross multiply
    1,286,974.80x = 1,932,017.40 × 1,277,643.60
  4. Step 4: Simplify right side
    1,286,974.80x = 2,468,429,666,198.64
  5. Step 5: Solve for x
    x = 2,468,429,666,198.64/1,286,974.80
  6. Step 6: Final answer
    x = 1,918,009.32

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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.