Home / 928,490.40-1,392,735.36-612,873.36

Finding the Fourth Proportional to 928,490.40, 1,392,735.36 and 612,873.36

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Solution

The fourth proportional to 928,490.40, 1,392,735.36 and 612,873.36 is: 919,309.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,490.40 : 1,392,735.36 = 612,873.36 : x
  2. Step 2: Convert to fraction form
    928,490.40/1,392,735.36 = 612,873.36/x
  3. Step 3: Cross multiply
    928,490.40x = 1,392,735.36 × 612,873.36
  4. Step 4: Simplify right side
    928,490.40x = 853,570,399,674.01
  5. Step 5: Solve for x
    x = 853,570,399,674.01/928,490.40
  6. Step 6: Final answer
    x = 919,309.88

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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.