Home / 1,311,753,912.89-1,967,630,869.47-438,355,281.22

Finding the Fourth Proportional to 1,311,753,912.89, 1,967,630,869.47 and 438,355,281.22

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Solution

The fourth proportional to 1,311,753,912.89, 1,967,630,869.47 and 438,355,281.22 is: 657,532,921.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,753,912.89 : 1,967,630,869.47 = 438,355,281.22 : x
  2. Step 2: Convert to fraction form
    1,311,753,912.89/1,967,630,869.47 = 438,355,281.22/x
  3. Step 3: Cross multiply
    1,311,753,912.89x = 1,967,630,869.47 × 438,355,281.22
  4. Step 4: Simplify right side
    1,311,753,912.89x = 862,521,383,113,836,800
  5. Step 5: Solve for x
    x = 862,521,383,113,836,800/1,311,753,912.89
  6. Step 6: Final answer
    x = 657,532,921.87

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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.