Home / 487,945.82-673,284.88-306,529.26

Finding the Fourth Proportional to 487,945.82, 673,284.88 and 306,529.26

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Solution

The fourth proportional to 487,945.82, 673,284.88 and 306,529.26 is: 422,959.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,945.82 : 673,284.88 = 306,529.26 : x
  2. Step 2: Convert to fraction form
    487,945.82/673,284.88 = 306,529.26/x
  3. Step 3: Cross multiply
    487,945.82x = 673,284.88 × 306,529.26
  4. Step 4: Simplify right side
    487,945.82x = 206,381,518,543.27
  5. Step 5: Solve for x
    x = 206,381,518,543.27/487,945.82
  6. Step 6: Final answer
    x = 422,959.90

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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.