Home / 643,815,273.40-965,722,910.10-512,301,340.60

Finding the Fourth Proportional to 643,815,273.40, 965,722,910.10 and 512,301,340.60

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Solution

The fourth proportional to 643,815,273.40, 965,722,910.10 and 512,301,340.60 is: 768,452,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,815,273.40 : 965,722,910.10 = 512,301,340.60 : x
  2. Step 2: Convert to fraction form
    643,815,273.40/965,722,910.10 = 512,301,340.60/x
  3. Step 3: Cross multiply
    643,815,273.40x = 965,722,910.10 × 512,301,340.60
  4. Step 4: Simplify right side
    643,815,273.40x = 494,741,141,492,363,328
  5. Step 5: Solve for x
    x = 494,741,141,492,363,328/643,815,273.40
  6. Step 6: Final answer
    x = 768,452,010.90

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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.