Home / 378,398,800,768.92-522,193,600,998.14-215,826,677,881.80

Finding the Fourth Proportional to 378,398,800,768.92, 522,193,600,998.14 and 215,826,677,881.80

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Solution

The fourth proportional to 378,398,800,768.92, 522,193,600,998.14 and 215,826,677,881.80 is: 297,842,672,560.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,398,800,768.92 : 522,193,600,998.14 = 215,826,677,881.80 : x
  2. Step 2: Convert to fraction form
    378,398,800,768.92/522,193,600,998.14 = 215,826,677,881.80/x
  3. Step 3: Cross multiply
    378,398,800,768.92x = 522,193,600,998.14 × 215,826,677,881.80
  4. Step 4: Simplify right side
    378,398,800,768.92x = 112,703,310,114,562,750,021,632
  5. Step 5: Solve for x
    x = 112,703,310,114,562,750,021,632/378,398,800,768.92
  6. Step 6: Final answer
    x = 297,842,672,560.13

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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.