Home / 378,398,800,767.42-522,193,600,996.07-215,826,677,880.30

Finding the Fourth Proportional to 378,398,800,767.42, 522,193,600,996.07 and 215,826,677,880.30

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Solution

The fourth proportional to 378,398,800,767.42, 522,193,600,996.07 and 215,826,677,880.30 is: 297,842,672,558.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,398,800,767.42 : 522,193,600,996.07 = 215,826,677,880.30 : x
  2. Step 2: Convert to fraction form
    378,398,800,767.42/522,193,600,996.07 = 215,826,677,880.30/x
  3. Step 3: Cross multiply
    378,398,800,767.42x = 522,193,600,996.07 × 215,826,677,880.30
  4. Step 4: Simplify right side
    378,398,800,767.42x = 112,703,310,113,332,694,876,160
  5. Step 5: Solve for x
    x = 112,703,310,113,332,694,876,160/378,398,800,767.42
  6. Step 6: Final answer
    x = 297,842,672,558.06

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1.5x scale

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.