Home / 1,290,298-1,922,945.78-1,223,113.36

Finding the Fourth Proportional to 1,290,298, 1,922,945.78 and 1,223,113.36

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Solution

The fourth proportional to 1,290,298, 1,922,945.78 and 1,223,113.36 is: 1,822,819.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,298 : 1,922,945.78 = 1,223,113.36 : x
  2. Step 2: Convert to fraction form
    1,290,298/1,922,945.78 = 1,223,113.36/x
  3. Step 3: Cross multiply
    1,290,298x = 1,922,945.78 × 1,223,113.36
  4. Step 4: Simplify right side
    1,290,298x = 2,351,980,674,073.62
  5. Step 5: Solve for x
    x = 2,351,980,674,073.62/1,290,298
  6. Step 6: Final answer
    x = 1,822,819.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.