Home / 1,276,820.80-1,915,231.20-1,119,227.20

Finding the Fourth Proportional to 1,276,820.80, 1,915,231.20 and 1,119,227.20

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Solution

The fourth proportional to 1,276,820.80, 1,915,231.20 and 1,119,227.20 is: 1,678,840.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,820.80 : 1,915,231.20 = 1,119,227.20 : x
  2. Step 2: Convert to fraction form
    1,276,820.80/1,915,231.20 = 1,119,227.20/x
  3. Step 3: Cross multiply
    1,276,820.80x = 1,915,231.20 × 1,119,227.20
  4. Step 4: Simplify right side
    1,276,820.80x = 2,143,578,853,328.64
  5. Step 5: Solve for x
    x = 2,143,578,853,328.64/1,276,820.80
  6. Step 6: Final answer
    x = 1,678,840.80

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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.