Home / 2,128,879-2,937,972.90-1,223,519.32

Finding the Fourth Proportional to 2,128,879, 2,937,972.90 and 1,223,519.32

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Solution

The fourth proportional to 2,128,879, 2,937,972.90 and 1,223,519.32 is: 1,688,525.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,879 : 2,937,972.90 = 1,223,519.32 : x
  2. Step 2: Convert to fraction form
    2,128,879/2,937,972.90 = 1,223,519.32/x
  3. Step 3: Cross multiply
    2,128,879x = 2,937,972.90 × 1,223,519.32
  4. Step 4: Simplify right side
    2,128,879x = 3,594,666,604,786.43
  5. Step 5: Solve for x
    x = 3,594,666,604,786.43/2,128,879
  6. Step 6: Final answer
    x = 1,688,525.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.