Home / 715,839.99-987,850.32-393,547.27

Finding the Fourth Proportional to 715,839.99, 987,850.32 and 393,547.27

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Solution

The fourth proportional to 715,839.99, 987,850.32 and 393,547.27 is: 543,090.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,839.99 : 987,850.32 = 393,547.27 : x
  2. Step 2: Convert to fraction form
    715,839.99/987,850.32 = 393,547.27/x
  3. Step 3: Cross multiply
    715,839.99x = 987,850.32 × 393,547.27
  4. Step 4: Simplify right side
    715,839.99x = 388,765,796,604.63
  5. Step 5: Solve for x
    x = 388,765,796,604.63/715,839.99
  6. Step 6: Final answer
    x = 543,090.36

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1.5x scale

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.