Home / 1,408,921,738.70-2,111,544,154.37-787,111,853.85

Finding the Fourth Proportional to 1,408,921,738.70, 2,111,544,154.37 and 787,111,853.85

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Solution

The fourth proportional to 1,408,921,738.70, 2,111,544,154.37 and 787,111,853.85 is: 1,179,640,705.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408,921,738.70 : 2,111,544,154.37 = 787,111,853.85 : x
  2. Step 2: Convert to fraction form
    1,408,921,738.70/2,111,544,154.37 = 787,111,853.85/x
  3. Step 3: Cross multiply
    1,408,921,738.70x = 2,111,544,154.37 × 787,111,853.85
  4. Step 4: Simplify right side
    1,408,921,738.70x = 1,662,021,433,834,269,184
  5. Step 5: Solve for x
    x = 1,662,021,433,834,269,184/1,408,921,738.70
  6. Step 6: Final answer
    x = 1,179,640,705.50

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Double scale
Find fourth proportional to 1,408,921,739.70, 2,111,544,155.87 and 787,111,854.85
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1.5x scale

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.