Home / 419,904,890.10-629,857,335.15-393,031,034.10

Finding the Fourth Proportional to 419,904,890.10, 629,857,335.15 and 393,031,034.10

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Solution

The fourth proportional to 419,904,890.10, 629,857,335.15 and 393,031,034.10 is: 589,546,551.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,890.10 : 629,857,335.15 = 393,031,034.10 : x
  2. Step 2: Convert to fraction form
    419,904,890.10/629,857,335.15 = 393,031,034.10/x
  3. Step 3: Cross multiply
    419,904,890.10x = 629,857,335.15 × 393,031,034.10
  4. Step 4: Simplify right side
    419,904,890.10x = 247,553,479,769,474,784
  5. Step 5: Solve for x
    x = 247,553,479,769,474,784/419,904,890.10
  6. Step 6: Final answer
    x = 589,546,551.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.