Home / 512,064,015.40-768,096,023.10-129,111,567.40

Finding the Fourth Proportional to 512,064,015.40, 768,096,023.10 and 129,111,567.40

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Solution

The fourth proportional to 512,064,015.40, 768,096,023.10 and 129,111,567.40 is: 193,667,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,064,015.40 : 768,096,023.10 = 129,111,567.40 : x
  2. Step 2: Convert to fraction form
    512,064,015.40/768,096,023.10 = 129,111,567.40/x
  3. Step 3: Cross multiply
    512,064,015.40x = 768,096,023.10 × 129,111,567.40
  4. Step 4: Simplify right side
    512,064,015.40x = 99,170,081,456,147,616
  5. Step 5: Solve for x
    x = 99,170,081,456,147,616/512,064,015.40
  6. Step 6: Final answer
    x = 193,667,351.10

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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.