Home / 521,520,768,138.30-782,281,152,207.45-149,290,988,682.30

Finding the Fourth Proportional to 521,520,768,138.30, 782,281,152,207.45 and 149,290,988,682.30

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Solution

The fourth proportional to 521,520,768,138.30, 782,281,152,207.45 and 149,290,988,682.30 is: 223,936,483,023.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,768,138.30 : 782,281,152,207.45 = 149,290,988,682.30 : x
  2. Step 2: Convert to fraction form
    521,520,768,138.30/782,281,152,207.45 = 149,290,988,682.30/x
  3. Step 3: Cross multiply
    521,520,768,138.30x = 782,281,152,207.45 × 149,290,988,682.30
  4. Step 4: Simplify right side
    521,520,768,138.30x = 116,787,526,640,579,008,004,096
  5. Step 5: Solve for x
    x = 116,787,526,640,579,008,004,096/521,520,768,138.30
  6. Step 6: Final answer
    x = 223,936,483,023.45

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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.