Home / 1,286,262,920.64-1,775,043,705.28-721,669,861.76

Finding the Fourth Proportional to 1,286,262,920.64, 1,775,043,705.28 and 721,669,861.76

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Solution

The fourth proportional to 1,286,262,920.64, 1,775,043,705.28 and 721,669,861.76 is: 995,904,900.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,262,920.64 : 1,775,043,705.28 = 721,669,861.76 : x
  2. Step 2: Convert to fraction form
    1,286,262,920.64/1,775,043,705.28 = 721,669,861.76/x
  3. Step 3: Cross multiply
    1,286,262,920.64x = 1,775,043,705.28 × 721,669,861.76
  4. Step 4: Simplify right side
    1,286,262,920.64x = 1,280,995,545,407,375,872
  5. Step 5: Solve for x
    x = 1,280,995,545,407,375,872/1,286,262,920.64
  6. Step 6: Final answer
    x = 995,904,900.04

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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.