Home / 1,188,890,812.60-1,783,336,218.90-412,278,364.60

Finding the Fourth Proportional to 1,188,890,812.60, 1,783,336,218.90 and 412,278,364.60

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Solution

The fourth proportional to 1,188,890,812.60, 1,783,336,218.90 and 412,278,364.60 is: 618,417,546.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,890,812.60 : 1,783,336,218.90 = 412,278,364.60 : x
  2. Step 2: Convert to fraction form
    1,188,890,812.60/1,783,336,218.90 = 412,278,364.60/x
  3. Step 3: Cross multiply
    1,188,890,812.60x = 1,783,336,218.90 × 412,278,364.60
  4. Step 4: Simplify right side
    1,188,890,812.60x = 735,230,939,860,039,680
  5. Step 5: Solve for x
    x = 735,230,939,860,039,680/1,188,890,812.60
  6. Step 6: Final answer
    x = 618,417,546.90

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Double scale
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Similar ratio
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1.5x scale

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.