Home / 1,105,175.68-1,525,055.20-621,644.56

Finding the Fourth Proportional to 1,105,175.68, 1,525,055.20 and 621,644.56

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Solution

The fourth proportional to 1,105,175.68, 1,525,055.20 and 621,644.56 is: 857,820.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,175.68 : 1,525,055.20 = 621,644.56 : x
  2. Step 2: Convert to fraction form
    1,105,175.68/1,525,055.20 = 621,644.56/x
  3. Step 3: Cross multiply
    1,105,175.68x = 1,525,055.20 × 621,644.56
  4. Step 4: Simplify right side
    1,105,175.68x = 948,042,268,779.71
  5. Step 5: Solve for x
    x = 948,042,268,779.71/1,105,175.68
  6. Step 6: Final answer
    x = 857,820.42

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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.