Home / 1,661,469,239.79-2,492,208,080.87-678,895,780.46

Finding the Fourth Proportional to 1,661,469,239.79, 2,492,208,080.87 and 678,895,780.46

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Solution

The fourth proportional to 1,661,469,239.79, 2,492,208,080.87 and 678,895,780.46 is: 1,018,345,395.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661,469,239.79 : 2,492,208,080.87 = 678,895,780.46 : x
  2. Step 2: Convert to fraction form
    1,661,469,239.79/2,492,208,080.87 = 678,895,780.46/x
  3. Step 3: Cross multiply
    1,661,469,239.79x = 2,492,208,080.87 × 678,895,780.46
  4. Step 4: Simplify right side
    1,661,469,239.79x = 1,691,949,550,115,101,952
  5. Step 5: Solve for x
    x = 1,691,949,550,115,101,952/1,661,469,239.79
  6. Step 6: Final answer
    x = 1,018,345,395.51

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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.