Home / 378,731,028.45-528,932,038.20-378,731,028.45

Finding the Fourth Proportional to 378,731,028.45, 528,932,038.20 and 378,731,028.45

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Solution

The fourth proportional to 378,731,028.45, 528,932,038.20 and 378,731,028.45 is: 528,932,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,731,028.45 : 528,932,038.20 = 378,731,028.45 : x
  2. Step 2: Convert to fraction form
    378,731,028.45/528,932,038.20 = 378,731,028.45/x
  3. Step 3: Cross multiply
    378,731,028.45x = 528,932,038.20 × 378,731,028.45
  4. Step 4: Simplify right side
    378,731,028.45x = 200,322,974,807,640,672
  5. Step 5: Solve for x
    x = 200,322,974,807,640,672/378,731,028.45
  6. Step 6: Final answer
    x = 528,932,038.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.