Home / 1,277,172.80-1,913,426.40-1,039,227.20

Finding the Fourth Proportional to 1,277,172.80, 1,913,426.40 and 1,039,227.20

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Solution

The fourth proportional to 1,277,172.80, 1,913,426.40 and 1,039,227.20 is: 1,556,942.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,172.80 : 1,913,426.40 = 1,039,227.20 : x
  2. Step 2: Convert to fraction form
    1,277,172.80/1,913,426.40 = 1,039,227.20/x
  3. Step 3: Cross multiply
    1,277,172.80x = 1,913,426.40 × 1,039,227.20
  4. Step 4: Simplify right side
    1,277,172.80x = 1,988,484,760,078.08
  5. Step 5: Solve for x
    x = 1,988,484,760,078.08/1,277,172.80
  6. Step 6: Final answer
    x = 1,556,942.62

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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.