Home / 826,685,379.32-1,140,825,320.48-455,407,410.69

Finding the Fourth Proportional to 826,685,379.32, 1,140,825,320.48 and 455,407,410.69

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Solution

The fourth proportional to 826,685,379.32, 1,140,825,320.48 and 455,407,410.69 is: 628,461,949.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,685,379.32 : 1,140,825,320.48 = 455,407,410.69 : x
  2. Step 2: Convert to fraction form
    826,685,379.32/1,140,825,320.48 = 455,407,410.69/x
  3. Step 3: Cross multiply
    826,685,379.32x = 1,140,825,320.48 × 455,407,410.69
  4. Step 4: Simplify right side
    826,685,379.32x = 519,540,305,247,109,120
  5. Step 5: Solve for x
    x = 519,540,305,247,109,120/826,685,379.32
  6. Step 6: Final answer
    x = 628,461,949.67

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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.