Home / 718,741,036.64-991,862,629.98-388,716,175.64

Finding the Fourth Proportional to 718,741,036.64, 991,862,629.98 and 388,716,175.64

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Solution

The fourth proportional to 718,741,036.64, 991,862,629.98 and 388,716,175.64 is: 536,428,322.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,741,036.64 : 991,862,629.98 = 388,716,175.64 : x
  2. Step 2: Convert to fraction form
    718,741,036.64/991,862,629.98 = 388,716,175.64/x
  3. Step 3: Cross multiply
    718,741,036.64x = 991,862,629.98 × 388,716,175.64
  4. Step 4: Simplify right side
    718,741,036.64x = 385,553,048,286,057,984
  5. Step 5: Solve for x
    x = 385,553,048,286,057,984/718,741,036.64
  6. Step 6: Final answer
    x = 536,428,322.07

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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.