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Finding the Fourth Proportional to 520,815,004.80, 780,136,005.60 and 244,701,880.80

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Solution

The fourth proportional to 520,815,004.80, 780,136,005.60 and 244,701,880.80 is: 366,542,334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,815,004.80 : 780,136,005.60 = 244,701,880.80 : x
  2. Step 2: Convert to fraction form
    520,815,004.80/780,136,005.60 = 244,701,880.80/x
  3. Step 3: Cross multiply
    520,815,004.80x = 780,136,005.60 × 244,701,880.80
  4. Step 4: Simplify right side
    520,815,004.80x = 190,900,747,850,119,360
  5. Step 5: Solve for x
    x = 190,900,747,850,119,360/520,815,004.80
  6. Step 6: Final answer
    x = 366,542,334.78

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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.