Home / 1,661,469,209.68-2,492,208,035.59-678,895,750.32

Finding the Fourth Proportional to 1,661,469,209.68, 2,492,208,035.59 and 678,895,750.32

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Solution

The fourth proportional to 1,661,469,209.68, 2,492,208,035.59 and 678,895,750.32 is: 1,018,345,350.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661,469,209.68 : 2,492,208,035.59 = 678,895,750.32 : x
  2. Step 2: Convert to fraction form
    1,661,469,209.68/2,492,208,035.59 = 678,895,750.32/x
  3. Step 3: Cross multiply
    1,661,469,209.68x = 2,492,208,035.59 × 678,895,750.32
  4. Step 4: Simplify right side
    1,661,469,209.68x = 1,691,949,444,265,652,992
  5. Step 5: Solve for x
    x = 1,691,949,444,265,652,992/1,661,469,209.68
  6. Step 6: Final answer
    x = 1,018,345,350.25

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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.