Home / 1,978,992,129.60-2,968,488,194.40-1,888,292,865.60

Finding the Fourth Proportional to 1,978,992,129.60, 2,968,488,194.40 and 1,888,292,865.60

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Solution

The fourth proportional to 1,978,992,129.60, 2,968,488,194.40 and 1,888,292,865.60 is: 2,832,439,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,992,129.60 : 2,968,488,194.40 = 1,888,292,865.60 : x
  2. Step 2: Convert to fraction form
    1,978,992,129.60/2,968,488,194.40 = 1,888,292,865.60/x
  3. Step 3: Cross multiply
    1,978,992,129.60x = 2,968,488,194.40 × 1,888,292,865.60
  4. Step 4: Simplify right side
    1,978,992,129.60x = 5,605,375,079,103,345,664
  5. Step 5: Solve for x
    x = 5,605,375,079,103,345,664/1,978,992,129.60
  6. Step 6: Final answer
    x = 2,832,439,298.40

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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.