Home / 1,245,964,100.20-1,868,946,150.30-518,858,333.80

Finding the Fourth Proportional to 1,245,964,100.20, 1,868,946,150.30 and 518,858,333.80

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Solution

The fourth proportional to 1,245,964,100.20, 1,868,946,150.30 and 518,858,333.80 is: 778,287,500.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,964,100.20 : 1,868,946,150.30 = 518,858,333.80 : x
  2. Step 2: Convert to fraction form
    1,245,964,100.20/1,868,946,150.30 = 518,858,333.80/x
  3. Step 3: Cross multiply
    1,245,964,100.20x = 1,868,946,150.30 × 518,858,333.80
  4. Step 4: Simplify right side
    1,245,964,100.20x = 969,718,285,506,582,400
  5. Step 5: Solve for x
    x = 969,718,285,506,582,400/1,245,964,100.20
  6. Step 6: Final answer
    x = 778,287,500.70

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Double scale
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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.