Home / 512,486,809.89-768,861,303.57-148,981,165.89

Finding the Fourth Proportional to 512,486,809.89, 768,861,303.57 and 148,981,165.89

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Solution

The fourth proportional to 512,486,809.89, 768,861,303.57 and 148,981,165.89 is: 223,509,856.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,486,809.89 : 768,861,303.57 = 148,981,165.89 : x
  2. Step 2: Convert to fraction form
    512,486,809.89/768,861,303.57 = 148,981,165.89/x
  3. Step 3: Cross multiply
    512,486,809.89x = 768,861,303.57 × 148,981,165.89
  4. Step 4: Simplify right side
    512,486,809.89x = 114,545,853,413,563,824
  5. Step 5: Solve for x
    x = 114,545,853,413,563,824/512,486,809.89
  6. Step 6: Final answer
    x = 223,509,856.65

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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.