Home / 440,105,512.80-660,158,269.20-423,099,400.80

Finding the Fourth Proportional to 440,105,512.80, 660,158,269.20 and 423,099,400.80

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Solution

The fourth proportional to 440,105,512.80, 660,158,269.20 and 423,099,400.80 is: 634,649,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,105,512.80 : 660,158,269.20 = 423,099,400.80 : x
  2. Step 2: Convert to fraction form
    440,105,512.80/660,158,269.20 = 423,099,400.80/x
  3. Step 3: Cross multiply
    440,105,512.80x = 660,158,269.20 × 423,099,400.80
  4. Step 4: Simplify right side
    440,105,512.80x = 279,312,568,131,685,120
  5. Step 5: Solve for x
    x = 279,312,568,131,685,120/440,105,512.80
  6. Step 6: Final answer
    x = 634,649,101.20

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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.