Home / 1,008,128,021.70-1,512,192,032.55-965,129,852.10

Finding the Fourth Proportional to 1,008,128,021.70, 1,512,192,032.55 and 965,129,852.10

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Solution

The fourth proportional to 1,008,128,021.70, 1,512,192,032.55 and 965,129,852.10 is: 1,447,694,778.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,128,021.70 : 1,512,192,032.55 = 965,129,852.10 : x
  2. Step 2: Convert to fraction form
    1,008,128,021.70/1,512,192,032.55 = 965,129,852.10/x
  3. Step 3: Cross multiply
    1,008,128,021.70x = 1,512,192,032.55 × 965,129,852.10
  4. Step 4: Simplify right side
    1,008,128,021.70x = 1,459,461,672,721,779,968
  5. Step 5: Solve for x
    x = 1,459,461,672,721,779,968/1,008,128,021.70
  6. Step 6: Final answer
    x = 1,447,694,778.15

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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.