Home / 819,956.70-1,230,165.45-399,246.30

Finding the Fourth Proportional to 819,956.70, 1,230,165.45 and 399,246.30

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Solution

The fourth proportional to 819,956.70, 1,230,165.45 and 399,246.30 is: 598,981.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,956.70 : 1,230,165.45 = 399,246.30 : x
  2. Step 2: Convert to fraction form
    819,956.70/1,230,165.45 = 399,246.30/x
  3. Step 3: Cross multiply
    819,956.70x = 1,230,165.45 × 399,246.30
  4. Step 4: Simplify right side
    819,956.70x = 491,139,004,300.34
  5. Step 5: Solve for x
    x = 491,139,004,300.34/819,956.70
  6. Step 6: Final answer
    x = 598,981.63

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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.