Home / 1,324,340.40-1,985,128.20-724,378.80

Finding the Fourth Proportional to 1,324,340.40, 1,985,128.20 and 724,378.80

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Solution

The fourth proportional to 1,324,340.40, 1,985,128.20 and 724,378.80 is: 1,085,812.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324,340.40 : 1,985,128.20 = 724,378.80 : x
  2. Step 2: Convert to fraction form
    1,324,340.40/1,985,128.20 = 724,378.80/x
  3. Step 3: Cross multiply
    1,324,340.40x = 1,985,128.20 × 724,378.80
  4. Step 4: Simplify right side
    1,324,340.40x = 1,437,984,783,362.16
  5. Step 5: Solve for x
    x = 1,437,984,783,362.16/1,324,340.40
  6. Step 6: Final answer
    x = 1,085,812.06

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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.