Home / 815,461.89-1,222,708.32-310,059.83

Finding the Fourth Proportional to 815,461.89, 1,222,708.32 and 310,059.83

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Solution

The fourth proportional to 815,461.89, 1,222,708.32 and 310,059.83 is: 464,905.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,461.89 : 1,222,708.32 = 310,059.83 : x
  2. Step 2: Convert to fraction form
    815,461.89/1,222,708.32 = 310,059.83/x
  3. Step 3: Cross multiply
    815,461.89x = 1,222,708.32 × 310,059.83
  4. Step 4: Simplify right side
    815,461.89x = 379,112,727,725.24
  5. Step 5: Solve for x
    x = 379,112,727,725.24/815,461.89
  6. Step 6: Final answer
    x = 464,905.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.