Home / 692,212,428.11-955,253,197.38-378,946,642.08

Finding the Fourth Proportional to 692,212,428.11, 955,253,197.38 and 378,946,642.08

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Solution

The fourth proportional to 692,212,428.11, 955,253,197.38 and 378,946,642.08 is: 522,946,391.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,212,428.11 : 955,253,197.38 = 378,946,642.08 : x
  2. Step 2: Convert to fraction form
    692,212,428.11/955,253,197.38 = 378,946,642.08/x
  3. Step 3: Cross multiply
    692,212,428.11x = 955,253,197.38 × 378,946,642.08
  4. Step 4: Simplify right side
    692,212,428.11x = 361,989,991,483,334,464
  5. Step 5: Solve for x
    x = 361,989,991,483,334,464/692,212,428.11
  6. Step 6: Final answer
    x = 522,946,391.58

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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.