Home / 486,415,910.71-729,317,336.14-412,665,459.31

Finding the Fourth Proportional to 486,415,910.71, 729,317,336.14 and 412,665,459.31

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Solution

The fourth proportional to 486,415,910.71, 729,317,336.14 and 412,665,459.31 is: 618,738,135.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,415,910.71 : 729,317,336.14 = 412,665,459.31 : x
  2. Step 2: Convert to fraction form
    486,415,910.71/729,317,336.14 = 412,665,459.31/x
  3. Step 3: Cross multiply
    486,415,910.71x = 729,317,336.14 × 412,665,459.31
  4. Step 4: Simplify right side
    486,415,910.71x = 300,964,073,495,248,832
  5. Step 5: Solve for x
    x = 300,964,073,495,248,832/486,415,910.71
  6. Step 6: Final answer
    x = 618,738,135.15

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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.