Home / 715,826.10-987,798.06-393,536.01

Finding the Fourth Proportional to 715,826.10, 987,798.06 and 393,536.01

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Solution

The fourth proportional to 715,826.10, 987,798.06 and 393,536.01 is: 543,056.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,826.10 : 987,798.06 = 393,536.01 : x
  2. Step 2: Convert to fraction form
    715,826.10/987,798.06 = 393,536.01/x
  3. Step 3: Cross multiply
    715,826.10x = 987,798.06 × 393,536.01
  4. Step 4: Simplify right side
    715,826.10x = 388,734,107,218.14
  5. Step 5: Solve for x
    x = 388,734,107,218.14/715,826.10
  6. Step 6: Final answer
    x = 543,056.63

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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.