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Finding the Fourth Proportional to 681,295,859.76, 940,363,217.72 and 443,733,029.37

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Solution

The fourth proportional to 681,295,859.76, 940,363,217.72 and 443,733,029.37 is: 612,465,514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,295,859.76 : 940,363,217.72 = 443,733,029.37 : x
  2. Step 2: Convert to fraction form
    681,295,859.76/940,363,217.72 = 443,733,029.37/x
  3. Step 3: Cross multiply
    681,295,859.76x = 940,363,217.72 × 443,733,029.37
  4. Step 4: Simplify right side
    681,295,859.76x = 417,270,219,310,831,232
  5. Step 5: Solve for x
    x = 417,270,219,310,831,232/681,295,859.76
  6. Step 6: Final answer
    x = 612,465,514.55

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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.