Home / 1,315,347,446.84-1,972,431,467.51-783,809,557.20

Finding the Fourth Proportional to 1,315,347,446.84, 1,972,431,467.51 and 783,809,557.20

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Solution

The fourth proportional to 1,315,347,446.84, 1,972,431,467.51 and 783,809,557.20 is: 1,175,362,934.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,347,446.84 : 1,972,431,467.51 = 783,809,557.20 : x
  2. Step 2: Convert to fraction form
    1,315,347,446.84/1,972,431,467.51 = 783,809,557.20/x
  3. Step 3: Cross multiply
    1,315,347,446.84x = 1,972,431,467.51 × 783,809,557.20
  4. Step 4: Simplify right side
    1,315,347,446.84x = 1,546,010,635,152,440,320
  5. Step 5: Solve for x
    x = 1,546,010,635,152,440,320/1,315,347,446.84
  6. Step 6: Final answer
    x = 1,175,362,934.62

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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.