Home / 1,289,105,189.44-1,778,965,417.44-702,394,325.44

Finding the Fourth Proportional to 1,289,105,189.44, 1,778,965,417.44 and 702,394,325.44

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Solution

The fourth proportional to 1,289,105,189.44, 1,778,965,417.44 and 702,394,325.44 is: 969,304,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,105,189.44 : 1,778,965,417.44 = 702,394,325.44 : x
  2. Step 2: Convert to fraction form
    1,289,105,189.44/1,778,965,417.44 = 702,394,325.44/x
  3. Step 3: Cross multiply
    1,289,105,189.44x = 1,778,965,417.44 × 702,394,325.44
  4. Step 4: Simplify right side
    1,289,105,189.44x = 1,249,535,214,363,856,896
  5. Step 5: Solve for x
    x = 1,249,535,214,363,856,896/1,289,105,189.44
  6. Step 6: Final answer
    x = 969,304,308.60

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Half scale
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Double scale
Find fourth proportional to 1,289,105,190.44, 1,778,965,418.82 and 702,394,326.44
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1.5x scale

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.