Home / 721,314,128.20-1,082,016,074.94-261,256,283.24

Finding the Fourth Proportional to 721,314,128.20, 1,082,016,074.94 and 261,256,283.24

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Solution

The fourth proportional to 721,314,128.20, 1,082,016,074.94 and 261,256,283.24 is: 391,900,681.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,314,128.20 : 1,082,016,074.94 = 261,256,283.24 : x
  2. Step 2: Convert to fraction form
    721,314,128.20/1,082,016,074.94 = 261,256,283.24/x
  3. Step 3: Cross multiply
    721,314,128.20x = 1,082,016,074.94 × 261,256,283.24
  4. Step 4: Simplify right side
    721,314,128.20x = 282,683,498,144,757,728
  5. Step 5: Solve for x
    x = 282,683,498,144,757,728/721,314,128.20
  6. Step 6: Final answer
    x = 391,900,681.12

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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.