Home / 378,398,800,808.62-522,193,601,052.90-215,826,677,921.49

Finding the Fourth Proportional to 378,398,800,808.62, 522,193,601,052.90 and 215,826,677,921.49

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Solution

The fourth proportional to 378,398,800,808.62, 522,193,601,052.90 and 215,826,677,921.49 is: 297,842,672,614.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,398,800,808.62 : 522,193,601,052.90 = 215,826,677,921.49 : x
  2. Step 2: Convert to fraction form
    378,398,800,808.62/522,193,601,052.90 = 215,826,677,921.49/x
  3. Step 3: Cross multiply
    378,398,800,808.62x = 522,193,601,052.90 × 215,826,677,921.49
  4. Step 4: Simplify right side
    378,398,800,808.62x = 112,703,310,147,107,294,281,728
  5. Step 5: Solve for x
    x = 112,703,310,147,107,294,281,728/378,398,800,808.62
  6. Step 6: Final answer
    x = 297,842,672,614.89

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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.