Home / 2,889,234,764.40-3,987,389,878.56-1,636,394,493.36

Finding the Fourth Proportional to 2,889,234,764.40, 3,987,389,878.56 and 1,636,394,493.36

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Solution

The fourth proportional to 2,889,234,764.40, 3,987,389,878.56 and 1,636,394,493.36 is: 2,258,363,674.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889,234,764.40 : 3,987,389,878.56 = 1,636,394,493.36 : x
  2. Step 2: Convert to fraction form
    2,889,234,764.40/3,987,389,878.56 = 1,636,394,493.36/x
  3. Step 3: Cross multiply
    2,889,234,764.40x = 3,987,389,878.56 × 1,636,394,493.36
  4. Step 4: Simplify right side
    2,889,234,764.40x = 6,524,942,840,154,982,400
  5. Step 5: Solve for x
    x = 6,524,942,840,154,982,400/2,889,234,764.40
  6. Step 6: Final answer
    x = 2,258,363,674.89

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1.5x scale

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.