Home / 1,286,972.80-1,932,014.40-1,277,641.60

Finding the Fourth Proportional to 1,286,972.80, 1,932,014.40 and 1,277,641.60

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Solution

The fourth proportional to 1,286,972.80, 1,932,014.40 and 1,277,641.60 is: 1,918,006.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,972.80 : 1,932,014.40 = 1,277,641.60 : x
  2. Step 2: Convert to fraction form
    1,286,972.80/1,932,014.40 = 1,277,641.60/x
  3. Step 3: Cross multiply
    1,286,972.80x = 1,932,014.40 × 1,277,641.60
  4. Step 4: Simplify right side
    1,286,972.80x = 2,468,421,969,239.04
  5. Step 5: Solve for x
    x = 2,468,421,969,239.04/1,286,972.80
  6. Step 6: Final answer
    x = 1,918,006.32

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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.