Home / 378,755,765.16-523,043,942.79-358,121,387.35

Finding the Fourth Proportional to 378,755,765.16, 523,043,942.79 and 358,121,387.35

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Solution

The fourth proportional to 378,755,765.16, 523,043,942.79 and 358,121,387.35 is: 494,548,835.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,755,765.16 : 523,043,942.79 = 358,121,387.35 : x
  2. Step 2: Convert to fraction form
    378,755,765.16/523,043,942.79 = 358,121,387.35/x
  3. Step 3: Cross multiply
    378,755,765.16x = 523,043,942.79 × 358,121,387.35
  4. Step 4: Simplify right side
    378,755,765.16x = 187,313,222,436,968,864
  5. Step 5: Solve for x
    x = 187,313,222,436,968,864/378,755,765.16
  6. Step 6: Final answer
    x = 494,548,835.07

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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.