Home / 3,939,304,752.64-5,436,369,424.92-2,155,116,815.44

Finding the Fourth Proportional to 3,939,304,752.64, 5,436,369,424.92 and 2,155,116,815.44

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Solution

The fourth proportional to 3,939,304,752.64, 5,436,369,424.92 and 2,155,116,815.44 is: 2,974,131,705.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,304,752.64 : 5,436,369,424.92 = 2,155,116,815.44 : x
  2. Step 2: Convert to fraction form
    3,939,304,752.64/5,436,369,424.92 = 2,155,116,815.44/x
  3. Step 3: Cross multiply
    3,939,304,752.64x = 5,436,369,424.92 × 2,155,116,815.44
  4. Step 4: Simplify right side
    3,939,304,752.64x = 11,716,011,162,588,975,104
  5. Step 5: Solve for x
    x = 11,716,011,162,588,975,104/3,939,304,752.64
  6. Step 6: Final answer
    x = 2,974,131,705.53

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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.