Home / 1,421,128.23-1,961,162.06-776,548.41

Finding the Fourth Proportional to 1,421,128.23, 1,961,162.06 and 776,548.41

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Solution

The fourth proportional to 1,421,128.23, 1,961,162.06 and 776,548.41 is: 1,071,639.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,128.23 : 1,961,162.06 = 776,548.41 : x
  2. Step 2: Convert to fraction form
    1,421,128.23/1,961,162.06 = 776,548.41/x
  3. Step 3: Cross multiply
    1,421,128.23x = 1,961,162.06 × 776,548.41
  4. Step 4: Simplify right side
    1,421,128.23x = 1,522,937,275,562.58
  5. Step 5: Solve for x
    x = 1,522,937,275,562.58/1,421,128.23
  6. Step 6: Final answer
    x = 1,071,639.59

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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.