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Finding the Fourth Proportional to 1,245,978,060.12, 1,868,824,322.82 and 325,943,201.88

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Solution

The fourth proportional to 1,245,978,060.12, 1,868,824,322.82 and 325,943,201.88 is: 488,877,455.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,978,060.12 : 1,868,824,322.82 = 325,943,201.88 : x
  2. Step 2: Convert to fraction form
    1,245,978,060.12/1,868,824,322.82 = 325,943,201.88/x
  3. Step 3: Cross multiply
    1,245,978,060.12x = 1,868,824,322.82 × 325,943,201.88
  4. Step 4: Simplify right side
    1,245,978,060.12x = 609,130,583,531,173,504
  5. Step 5: Solve for x
    x = 609,130,583,531,173,504/1,245,978,060.12
  6. Step 6: Final answer
    x = 488,877,455.41

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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.