Home / 718,741,040.64-991,862,635.50-388,716,179.64

Finding the Fourth Proportional to 718,741,040.64, 991,862,635.50 and 388,716,179.64

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Solution

The fourth proportional to 718,741,040.64, 991,862,635.50 and 388,716,179.64 is: 536,428,327.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,741,040.64 : 991,862,635.50 = 388,716,179.64 : x
  2. Step 2: Convert to fraction form
    718,741,040.64/991,862,635.50 = 388,716,179.64/x
  3. Step 3: Cross multiply
    718,741,040.64x = 991,862,635.50 × 388,716,179.64
  4. Step 4: Simplify right side
    718,741,040.64x = 385,553,054,399,221,824
  5. Step 5: Solve for x
    x = 385,553,054,399,221,824/718,741,040.64
  6. Step 6: Final answer
    x = 536,428,327.59

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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.