Home / 921,188,469.36-1,271,237,000.28-503,500,512.88

Finding the Fourth Proportional to 921,188,469.36, 1,271,237,000.28 and 503,500,512.88

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Solution

The fourth proportional to 921,188,469.36, 1,271,237,000.28 and 503,500,512.88 is: 694,829,020.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,188,469.36 : 1,271,237,000.28 = 503,500,512.88 : x
  2. Step 2: Convert to fraction form
    921,188,469.36/1,271,237,000.28 = 503,500,512.88/x
  3. Step 3: Cross multiply
    921,188,469.36x = 1,271,237,000.28 × 503,500,512.88
  4. Step 4: Simplify right side
    921,188,469.36x = 640,068,481,633,012,736
  5. Step 5: Solve for x
    x = 640,068,481,633,012,736/921,188,469.36
  6. Step 6: Final answer
    x = 694,829,020.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.