Home / 1,191,195.89-1,643,844.93-647,321.39

Finding the Fourth Proportional to 1,191,195.89, 1,643,844.93 and 647,321.39

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Solution

The fourth proportional to 1,191,195.89, 1,643,844.93 and 647,321.39 is: 893,300.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,195.89 : 1,643,844.93 = 647,321.39 : x
  2. Step 2: Convert to fraction form
    1,191,195.89/1,643,844.93 = 647,321.39/x
  3. Step 3: Cross multiply
    1,191,195.89x = 1,643,844.93 × 647,321.39
  4. Step 4: Simplify right side
    1,191,195.89x = 1,064,095,984,190.97
  5. Step 5: Solve for x
    x = 1,064,095,984,190.97/1,191,195.89
  6. Step 6: Final answer
    x = 893,300.58

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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.