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Finding the Fourth Proportional to 1,373,339,431.92, 1,895,258,253.60 and 786,741,942

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Solution

The fourth proportional to 1,373,339,431.92, 1,895,258,253.60 and 786,741,942 is: 1,085,732,430.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373,339,431.92 : 1,895,258,253.60 = 786,741,942 : x
  2. Step 2: Convert to fraction form
    1,373,339,431.92/1,895,258,253.60 = 786,741,942/x
  3. Step 3: Cross multiply
    1,373,339,431.92x = 1,895,258,253.60 × 786,741,942
  4. Step 4: Simplify right side
    1,373,339,431.92x = 1,491,079,159,028,792,320
  5. Step 5: Solve for x
    x = 1,491,079,159,028,792,320/1,373,339,431.92
  6. Step 6: Final answer
    x = 1,085,732,430.29

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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.