Home / 518,412,747.54-777,619,869.72-211,704,860.42

Finding the Fourth Proportional to 518,412,747.54, 777,619,869.72 and 211,704,860.42

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Solution

The fourth proportional to 518,412,747.54, 777,619,869.72 and 211,704,860.42 is: 317,557,596.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,412,747.54 : 777,619,869.72 = 211,704,860.42 : x
  2. Step 2: Convert to fraction form
    518,412,747.54/777,619,869.72 = 211,704,860.42/x
  3. Step 3: Cross multiply
    518,412,747.54x = 777,619,869.72 × 211,704,860.42
  4. Step 4: Simplify right side
    518,412,747.54x = 164,625,905,975,003,072
  5. Step 5: Solve for x
    x = 164,625,905,975,003,072/518,412,747.54
  6. Step 6: Final answer
    x = 317,557,596.25

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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.