Home / 512,583,020.80-768,799,881.60-149,039,468.80

Finding the Fourth Proportional to 512,583,020.80, 768,799,881.60 and 149,039,468.80

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Solution

The fourth proportional to 512,583,020.80, 768,799,881.60 and 149,039,468.80 is: 223,537,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,583,020.80 : 768,799,881.60 = 149,039,468.80 : x
  2. Step 2: Convert to fraction form
    512,583,020.80/768,799,881.60 = 149,039,468.80/x
  3. Step 3: Cross multiply
    512,583,020.80x = 768,799,881.60 × 149,039,468.80
  4. Step 4: Simplify right side
    512,583,020.80x = 114,581,525,967,166,912
  5. Step 5: Solve for x
    x = 114,581,525,967,166,912/512,583,020.80
  6. Step 6: Final answer
    x = 223,537,497.96

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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.