Home / 1,291,635.87-1,936,488.56-891,133.80

Finding the Fourth Proportional to 1,291,635.87, 1,936,488.56 and 891,133.80

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Solution

The fourth proportional to 1,291,635.87, 1,936,488.56 and 891,133.80 is: 1,336,034.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,635.87 : 1,936,488.56 = 891,133.80 : x
  2. Step 2: Convert to fraction form
    1,291,635.87/1,936,488.56 = 891,133.80/x
  3. Step 3: Cross multiply
    1,291,635.87x = 1,936,488.56 × 891,133.80
  4. Step 4: Simplify right side
    1,291,635.87x = 1,725,670,404,673.66
  5. Step 5: Solve for x
    x = 1,725,670,404,673.66/1,291,635.87
  6. Step 6: Final answer
    x = 1,336,034.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.