Home / 412,992,014.05-619,488,021.08-289,372,276.45

Finding the Fourth Proportional to 412,992,014.05, 619,488,021.08 and 289,372,276.45

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Solution

The fourth proportional to 412,992,014.05, 619,488,021.08 and 289,372,276.45 is: 434,058,414.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,992,014.05 : 619,488,021.08 = 289,372,276.45 : x
  2. Step 2: Convert to fraction form
    412,992,014.05/619,488,021.08 = 289,372,276.45/x
  3. Step 3: Cross multiply
    412,992,014.05x = 619,488,021.08 × 289,372,276.45
  4. Step 4: Simplify right side
    412,992,014.05x = 179,262,658,891,978,336
  5. Step 5: Solve for x
    x = 179,262,658,891,978,336/412,992,014.05
  6. Step 6: Final answer
    x = 434,058,414.68

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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.