Home / 1,380,605,912.68-2,071,199,715.72-447,855,929.05

Finding the Fourth Proportional to 1,380,605,912.68, 2,071,199,715.72 and 447,855,929.05

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Solution

The fourth proportional to 1,380,605,912.68, 2,071,199,715.72 and 447,855,929.05 is: 671,878,241.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,605,912.68 : 2,071,199,715.72 = 447,855,929.05 : x
  2. Step 2: Convert to fraction form
    1,380,605,912.68/2,071,199,715.72 = 447,855,929.05/x
  3. Step 3: Cross multiply
    1,380,605,912.68x = 2,071,199,715.72 × 447,855,929.05
  4. Step 4: Simplify right side
    1,380,605,912.68x = 927,599,072,931,876,480
  5. Step 5: Solve for x
    x = 927,599,072,931,876,480/1,380,605,912.68
  6. Step 6: Final answer
    x = 671,878,241.58

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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.