Home / 718,741,106-991,862,725.56-388,716,244.64

Finding the Fourth Proportional to 718,741,106, 991,862,725.56 and 388,716,244.64

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Solution

The fourth proportional to 718,741,106, 991,862,725.56 and 388,716,244.64 is: 536,428,417.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,741,106 : 991,862,725.56 = 388,716,244.64 : x
  2. Step 2: Convert to fraction form
    718,741,106/991,862,725.56 = 388,716,244.64/x
  3. Step 3: Cross multiply
    718,741,106x = 991,862,725.56 × 388,716,244.64
  4. Step 4: Simplify right side
    718,741,106x = 385,553,153,878,078,080
  5. Step 5: Solve for x
    x = 385,553,153,878,078,080/718,741,106
  6. Step 6: Final answer
    x = 536,428,417.21

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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.