Home / 885,431.79-1,221,890.21-503,458.56

Finding the Fourth Proportional to 885,431.79, 1,221,890.21 and 503,458.56

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Solution

The fourth proportional to 885,431.79, 1,221,890.21 and 503,458.56 is: 694,769.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,431.79 : 1,221,890.21 = 503,458.56 : x
  2. Step 2: Convert to fraction form
    885,431.79/1,221,890.21 = 503,458.56/x
  3. Step 3: Cross multiply
    885,431.79x = 1,221,890.21 × 503,458.56
  4. Step 4: Simplify right side
    885,431.79x = 615,171,085,604.70
  5. Step 5: Solve for x
    x = 615,171,085,604.70/885,431.79
  6. Step 6: Final answer
    x = 694,769.59

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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.