Home / 1,243,974.20-1,866,945.45-486,178.70

Finding the Fourth Proportional to 1,243,974.20, 1,866,945.45 and 486,178.70

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Solution

The fourth proportional to 1,243,974.20, 1,866,945.45 and 486,178.70 is: 729,652.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,974.20 : 1,866,945.45 = 486,178.70 : x
  2. Step 2: Convert to fraction form
    1,243,974.20/1,866,945.45 = 486,178.70/x
  3. Step 3: Cross multiply
    1,243,974.20x = 1,866,945.45 × 486,178.70
  4. Step 4: Simplify right side
    1,243,974.20x = 907,669,111,851.92
  5. Step 5: Solve for x
    x = 907,669,111,851.92/1,243,974.20
  6. Step 6: Final answer
    x = 729,652.68

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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.