Home / 430,970,745.25-646,456,126.44-103,446,258.40

Finding the Fourth Proportional to 430,970,745.25, 646,456,126.44 and 103,446,258.40

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Solution

The fourth proportional to 430,970,745.25, 646,456,126.44 and 103,446,258.40 is: 155,169,389.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,970,745.25 : 646,456,126.44 = 103,446,258.40 : x
  2. Step 2: Convert to fraction form
    430,970,745.25/646,456,126.44 = 103,446,258.40/x
  3. Step 3: Cross multiply
    430,970,745.25x = 646,456,126.44 × 103,446,258.40
  4. Step 4: Simplify right side
    430,970,745.25x = 66,873,467,496,743,032
  5. Step 5: Solve for x
    x = 66,873,467,496,743,032/430,970,745.25
  6. Step 6: Final answer
    x = 155,169,389.65

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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.