Home / 825,978.14-1,139,867.39-463,428.22

Finding the Fourth Proportional to 825,978.14, 1,139,867.39 and 463,428.22

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Solution

The fourth proportional to 825,978.14, 1,139,867.39 and 463,428.22 is: 639,540.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,978.14 : 1,139,867.39 = 463,428.22 : x
  2. Step 2: Convert to fraction form
    825,978.14/1,139,867.39 = 463,428.22/x
  3. Step 3: Cross multiply
    825,978.14x = 1,139,867.39 × 463,428.22
  4. Step 4: Simplify right side
    825,978.14x = 528,246,710,416.94
  5. Step 5: Solve for x
    x = 528,246,710,416.94/825,978.14
  6. Step 6: Final answer
    x = 639,540.79

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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.