Home / 386,714,592.79-533,679,028.56-217,198,703.23

Finding the Fourth Proportional to 386,714,592.79, 533,679,028.56 and 217,198,703.23

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Solution

The fourth proportional to 386,714,592.79, 533,679,028.56 and 217,198,703.23 is: 299,741,450.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,714,592.79 : 533,679,028.56 = 217,198,703.23 : x
  2. Step 2: Convert to fraction form
    386,714,592.79/533,679,028.56 = 217,198,703.23/x
  3. Step 3: Cross multiply
    386,714,592.79x = 533,679,028.56 × 217,198,703.23
  4. Step 4: Simplify right side
    386,714,592.79x = 115,914,392,940,523,744
  5. Step 5: Solve for x
    x = 115,914,392,940,523,744/386,714,592.79
  6. Step 6: Final answer
    x = 299,741,450.42

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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.