Home / 1,189,556.10-1,641,588.70-645,691.80

Finding the Fourth Proportional to 1,189,556.10, 1,641,588.70 and 645,691.80

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Solution

The fourth proportional to 1,189,556.10, 1,641,588.70 and 645,691.80 is: 891,055.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,556.10 : 1,641,588.70 = 645,691.80 : x
  2. Step 2: Convert to fraction form
    1,189,556.10/1,641,588.70 = 645,691.80/x
  3. Step 3: Cross multiply
    1,189,556.10x = 1,641,588.70 × 645,691.80
  4. Step 4: Simplify right side
    1,189,556.10x = 1,059,960,362,562.66
  5. Step 5: Solve for x
    x = 1,059,960,362,562.66/1,189,556.10
  6. Step 6: Final answer
    x = 891,055.38

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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.