Home / 931,128,083.82-1,396,800,185.40-309,398,800.86

Finding the Fourth Proportional to 931,128,083.82, 1,396,800,185.40 and 309,398,800.86

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Solution

The fourth proportional to 931,128,083.82, 1,396,800,185.40 and 309,398,800.86 is: 464,134,107.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,128,083.82 : 1,396,800,185.40 = 309,398,800.86 : x
  2. Step 2: Convert to fraction form
    931,128,083.82/1,396,800,185.40 = 309,398,800.86/x
  3. Step 3: Cross multiply
    931,128,083.82x = 1,396,800,185.40 × 309,398,800.86
  4. Step 4: Simplify right side
    931,128,083.82x = 432,168,302,403,785,728
  5. Step 5: Solve for x
    x = 432,168,302,403,785,728/931,128,083.82
  6. Step 6: Final answer
    x = 464,134,107.77

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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.