Home / 780,812,940.82-1,171,178,161.53-256,112,927.39

Finding the Fourth Proportional to 780,812,940.82, 1,171,178,161.53 and 256,112,927.39

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Solution

The fourth proportional to 780,812,940.82, 1,171,178,161.53 and 256,112,927.39 is: 384,155,860.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,812,940.82 : 1,171,178,161.53 = 256,112,927.39 : x
  2. Step 2: Convert to fraction form
    780,812,940.82/1,171,178,161.53 = 256,112,927.39/x
  3. Step 3: Cross multiply
    780,812,940.82x = 1,171,178,161.53 × 256,112,927.39
  4. Step 4: Simplify right side
    780,812,940.82x = 299,953,867,440,161,472
  5. Step 5: Solve for x
    x = 299,953,867,440,161,472/780,812,940.82
  6. Step 6: Final answer
    x = 384,155,860.85

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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.