Home / 1,377,009.20-2,065,513.80-1,111,288.70

Finding the Fourth Proportional to 1,377,009.20, 2,065,513.80 and 1,111,288.70

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Solution

The fourth proportional to 1,377,009.20, 2,065,513.80 and 1,111,288.70 is: 1,666,933.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377,009.20 : 2,065,513.80 = 1,111,288.70 : x
  2. Step 2: Convert to fraction form
    1,377,009.20/2,065,513.80 = 1,111,288.70/x
  3. Step 3: Cross multiply
    1,377,009.20x = 2,065,513.80 × 1,111,288.70
  4. Step 4: Simplify right side
    1,377,009.20x = 2,295,382,145,634.06
  5. Step 5: Solve for x
    x = 2,295,382,145,634.06/1,377,009.20
  6. Step 6: Final answer
    x = 1,666,933.05

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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.