Home / 1,105,128.58-1,525,075.20-621,694.06

Finding the Fourth Proportional to 1,105,128.58, 1,525,075.20 and 621,694.06

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Solution

The fourth proportional to 1,105,128.58, 1,525,075.20 and 621,694.06 is: 857,936.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,128.58 : 1,525,075.20 = 621,694.06 : x
  2. Step 2: Convert to fraction form
    1,105,128.58/1,525,075.20 = 621,694.06/x
  3. Step 3: Cross multiply
    1,105,128.58x = 1,525,075.20 × 621,694.06
  4. Step 4: Simplify right side
    1,105,128.58x = 948,130,192,893.31
  5. Step 5: Solve for x
    x = 948,130,192,893.31/1,105,128.58
  6. Step 6: Final answer
    x = 857,936.54

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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.