Home / 1,911,809,863.36-2,868,225,126.72-685,102,317.76

Finding the Fourth Proportional to 1,911,809,863.36, 2,868,225,126.72 and 685,102,317.76

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Solution

The fourth proportional to 1,911,809,863.36, 2,868,225,126.72 and 685,102,317.76 is: 1,027,836,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911,809,863.36 : 2,868,225,126.72 = 685,102,317.76 : x
  2. Step 2: Convert to fraction form
    1,911,809,863.36/2,868,225,126.72 = 685,102,317.76/x
  3. Step 3: Cross multiply
    1,911,809,863.36x = 2,868,225,126.72 × 685,102,317.76
  4. Step 4: Simplify right side
    1,911,809,863.36x = 1,965,027,682,173,341,440
  5. Step 5: Solve for x
    x = 1,965,027,682,173,341,440/1,911,809,863.36
  6. Step 6: Final answer
    x = 1,027,836,355.40

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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.