Home / 393,362,393.78-542,825,876.22-217,146,607.04

Finding the Fourth Proportional to 393,362,393.78, 542,825,876.22 and 217,146,607.04

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Solution

The fourth proportional to 393,362,393.78, 542,825,876.22 and 217,146,607.04 is: 299,654,463.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,362,393.78 : 542,825,876.22 = 217,146,607.04 : x
  2. Step 2: Convert to fraction form
    393,362,393.78/542,825,876.22 = 217,146,607.04/x
  3. Step 3: Cross multiply
    393,362,393.78x = 542,825,876.22 × 217,146,607.04
  4. Step 4: Simplify right side
    393,362,393.78x = 117,872,797,234,688,016
  5. Step 5: Solve for x
    x = 117,872,797,234,688,016/393,362,393.78
  6. Step 6: Final answer
    x = 299,654,463.92

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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.