Home / 1,421,021.06-1,961,022.81-776,441.21

Finding the Fourth Proportional to 1,421,021.06, 1,961,022.81 and 776,441.21

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Solution

The fourth proportional to 1,421,021.06, 1,961,022.81 and 776,441.21 is: 1,071,496.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,021.06 : 1,961,022.81 = 776,441.21 : x
  2. Step 2: Convert to fraction form
    1,421,021.06/1,961,022.81 = 776,441.21/x
  3. Step 3: Cross multiply
    1,421,021.06x = 1,961,022.81 × 776,441.21
  4. Step 4: Simplify right side
    1,421,021.06x = 1,522,618,913,628.89
  5. Step 5: Solve for x
    x = 1,522,618,913,628.89/1,421,021.06
  6. Step 6: Final answer
    x = 1,071,496.38

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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.