Home / 1,242,844,422.50-1,715,100,991.62-678,333,350.68

Finding the Fourth Proportional to 1,242,844,422.50, 1,715,100,991.62 and 678,333,350.68

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Solution

The fourth proportional to 1,242,844,422.50, 1,715,100,991.62 and 678,333,350.68 is: 936,086,754.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,844,422.50 : 1,715,100,991.62 = 678,333,350.68 : x
  2. Step 2: Convert to fraction form
    1,242,844,422.50/1,715,100,991.62 = 678,333,350.68/x
  3. Step 3: Cross multiply
    1,242,844,422.50x = 1,715,100,991.62 × 678,333,350.68
  4. Step 4: Simplify right side
    1,242,844,422.50x = 1,163,410,202,400,185,088
  5. Step 5: Solve for x
    x = 1,163,410,202,400,185,088/1,242,844,422.50
  6. Step 6: Final answer
    x = 936,086,754.98

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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.