Home / 1,298,827,518.63-1,948,566,120.41-378,703,857.25

Finding the Fourth Proportional to 1,298,827,518.63, 1,948,566,120.41 and 378,703,857.25

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Solution

The fourth proportional to 1,298,827,518.63, 1,948,566,120.41 and 378,703,857.25 is: 568,150,501.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,827,518.63 : 1,948,566,120.41 = 378,703,857.25 : x
  2. Step 2: Convert to fraction form
    1,298,827,518.63/1,948,566,120.41 = 378,703,857.25/x
  3. Step 3: Cross multiply
    1,298,827,518.63x = 1,948,566,120.41 × 378,703,857.25
  4. Step 4: Simplify right side
    1,298,827,518.63x = 737,929,505,905,934,976
  5. Step 5: Solve for x
    x = 737,929,505,905,934,976/1,298,827,518.63
  6. Step 6: Final answer
    x = 568,150,501.37

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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.