Home / 486,415,910.21-729,317,335.39-412,665,458.81

Finding the Fourth Proportional to 486,415,910.21, 729,317,335.39 and 412,665,458.81

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Solution

The fourth proportional to 486,415,910.21, 729,317,335.39 and 412,665,458.81 is: 618,738,134.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,415,910.21 : 729,317,335.39 = 412,665,458.81 : x
  2. Step 2: Convert to fraction form
    486,415,910.21/729,317,335.39 = 412,665,458.81/x
  3. Step 3: Cross multiply
    486,415,910.21x = 729,317,335.39 × 412,665,458.81
  4. Step 4: Simplify right side
    486,415,910.21x = 300,964,072,822,122,752
  5. Step 5: Solve for x
    x = 300,964,072,822,122,752/486,415,910.21
  6. Step 6: Final answer
    x = 618,738,134.40

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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.