Home / 420,137,115.60-629,780,520.60-247,525,078.80

Finding the Fourth Proportional to 420,137,115.60, 629,780,520.60 and 247,525,078.80

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Solution

The fourth proportional to 420,137,115.60, 629,780,520.60 and 247,525,078.80 is: 371,037,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,137,115.60 : 629,780,520.60 = 247,525,078.80 : x
  2. Step 2: Convert to fraction form
    420,137,115.60/629,780,520.60 = 247,525,078.80/x
  3. Step 3: Cross multiply
    420,137,115.60x = 629,780,520.60 × 247,525,078.80
  4. Step 4: Simplify right side
    420,137,115.60x = 155,886,472,988,220,032
  5. Step 5: Solve for x
    x = 155,886,472,988,220,032/420,137,115.60
  6. Step 6: Final answer
    x = 371,037,138.12

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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.