Home / 393,362,392.78-542,825,874.84-217,146,606.04

Finding the Fourth Proportional to 393,362,392.78, 542,825,874.84 and 217,146,606.04

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Solution

The fourth proportional to 393,362,392.78, 542,825,874.84 and 217,146,606.04 is: 299,654,462.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,362,392.78 : 542,825,874.84 = 217,146,606.04 : x
  2. Step 2: Convert to fraction form
    393,362,392.78/542,825,874.84 = 217,146,606.04/x
  3. Step 3: Cross multiply
    393,362,392.78x = 542,825,874.84 × 217,146,606.04
  4. Step 4: Simplify right side
    393,362,392.78x = 117,872,796,392,199,824
  5. Step 5: Solve for x
    x = 117,872,796,392,199,824/393,362,392.78
  6. Step 6: Final answer
    x = 299,654,462.54

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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.