Home / 718,741,112.50-991,862,734.54-388,716,251.14

Finding the Fourth Proportional to 718,741,112.50, 991,862,734.54 and 388,716,251.14

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Solution

The fourth proportional to 718,741,112.50, 991,862,734.54 and 388,716,251.14 is: 536,428,426.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,741,112.50 : 991,862,734.54 = 388,716,251.14 : x
  2. Step 2: Convert to fraction form
    718,741,112.50/991,862,734.54 = 388,716,251.14/x
  3. Step 3: Cross multiply
    718,741,112.50x = 991,862,734.54 × 388,716,251.14
  4. Step 4: Simplify right side
    718,741,112.50x = 385,553,163,815,857,792
  5. Step 5: Solve for x
    x = 385,553,163,815,857,792/718,741,112.50
  6. Step 6: Final answer
    x = 536,428,426.19

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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.