Home / 780,408,422.91-1,170,145,151.25-248,390,042.86

Finding the Fourth Proportional to 780,408,422.91, 1,170,145,151.25 and 248,390,042.86

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Solution

The fourth proportional to 780,408,422.91, 1,170,145,151.25 and 248,390,042.86 is: 372,436,272.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,408,422.91 : 1,170,145,151.25 = 248,390,042.86 : x
  2. Step 2: Convert to fraction form
    780,408,422.91/1,170,145,151.25 = 248,390,042.86/x
  3. Step 3: Cross multiply
    780,408,422.91x = 1,170,145,151.25 × 248,390,042.86
  4. Step 4: Simplify right side
    780,408,422.91x = 290,652,404,270,698,816
  5. Step 5: Solve for x
    x = 290,652,404,270,698,816/780,408,422.91
  6. Step 6: Final answer
    x = 372,436,272.78

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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.