Home / 718,292,200.56-991,159,005.78-405,007,745.64

Finding the Fourth Proportional to 718,292,200.56, 991,159,005.78 and 405,007,745.64

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Solution

The fourth proportional to 718,292,200.56, 991,159,005.78 and 405,007,745.64 is: 558,863,195.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,292,200.56 : 991,159,005.78 = 405,007,745.64 : x
  2. Step 2: Convert to fraction form
    718,292,200.56/991,159,005.78 = 405,007,745.64/x
  3. Step 3: Cross multiply
    718,292,200.56x = 991,159,005.78 × 405,007,745.64
  4. Step 4: Simplify right side
    718,292,200.56x = 401,427,074,501,741,504
  5. Step 5: Solve for x
    x = 401,427,074,501,741,504/718,292,200.56
  6. Step 6: Final answer
    x = 558,863,195.49

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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.