Home / 280,482,859.60-420,724,289.40-274,743,296.80

Finding the Fourth Proportional to 280,482,859.60, 420,724,289.40 and 274,743,296.80

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Solution

The fourth proportional to 280,482,859.60, 420,724,289.40 and 274,743,296.80 is: 412,114,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,482,859.60 : 420,724,289.40 = 274,743,296.80 : x
  2. Step 2: Convert to fraction form
    280,482,859.60/420,724,289.40 = 274,743,296.80/x
  3. Step 3: Cross multiply
    280,482,859.60x = 420,724,289.40 × 274,743,296.80
  4. Step 4: Simplify right side
    280,482,859.60x = 115,591,178,313,593,296
  5. Step 5: Solve for x
    x = 115,591,178,313,593,296/280,482,859.60
  6. Step 6: Final answer
    x = 412,114,945.20

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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.