Home / 3,981,312,309.60-5,971,968,464.40-1,220,919,400.80

Finding the Fourth Proportional to 3,981,312,309.60, 5,971,968,464.40 and 1,220,919,400.80

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Solution

The fourth proportional to 3,981,312,309.60, 5,971,968,464.40 and 1,220,919,400.80 is: 1,831,379,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981,312,309.60 : 5,971,968,464.40 = 1,220,919,400.80 : x
  2. Step 2: Convert to fraction form
    3,981,312,309.60/5,971,968,464.40 = 1,220,919,400.80/x
  3. Step 3: Cross multiply
    3,981,312,309.60x = 5,971,968,464.40 × 1,220,919,400.80
  4. Step 4: Simplify right side
    3,981,312,309.60x = 7,291,292,159,151,742,976
  5. Step 5: Solve for x
    x = 7,291,292,159,151,742,976/3,981,312,309.60
  6. Step 6: Final answer
    x = 1,831,379,101.20

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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.