Home / 1,220,944,988.88-1,684,904,914.31-685,022,671.17

Finding the Fourth Proportional to 1,220,944,988.88, 1,684,904,914.31 and 685,022,671.17

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Solution

The fourth proportional to 1,220,944,988.88, 1,684,904,914.31 and 685,022,671.17 is: 945,331,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,944,988.88 : 1,684,904,914.31 = 685,022,671.17 : x
  2. Step 2: Convert to fraction form
    1,220,944,988.88/1,684,904,914.31 = 685,022,671.17/x
  3. Step 3: Cross multiply
    1,220,944,988.88x = 1,684,904,914.31 × 685,022,671.17
  4. Step 4: Simplify right side
    1,220,944,988.88x = 1,154,198,065,064,670,976
  5. Step 5: Solve for x
    x = 1,154,198,065,064,670,976/1,220,944,988.88
  6. Step 6: Final answer
    x = 945,331,751.70

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Double scale
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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.