Home / 1,388,790.06-1,916,486.24-776,953.53

Finding the Fourth Proportional to 1,388,790.06, 1,916,486.24 and 776,953.53

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Solution

The fourth proportional to 1,388,790.06, 1,916,486.24 and 776,953.53 is: 1,072,171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,790.06 : 1,916,486.24 = 776,953.53 : x
  2. Step 2: Convert to fraction form
    1,388,790.06/1,916,486.24 = 776,953.53/x
  3. Step 3: Cross multiply
    1,388,790.06x = 1,916,486.24 × 776,953.53
  4. Step 4: Simplify right side
    1,388,790.06x = 1,489,020,745,479.66
  5. Step 5: Solve for x
    x = 1,489,020,745,479.66/1,388,790.06
  6. Step 6: Final answer
    x = 1,072,171.23

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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.