Home / 684,990.40-1,027,466.40-311,012.80

Finding the Fourth Proportional to 684,990.40, 1,027,466.40 and 311,012.80

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Solution

The fourth proportional to 684,990.40, 1,027,466.40 and 311,012.80 is: 466,510.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,990.40 : 1,027,466.40 = 311,012.80 : x
  2. Step 2: Convert to fraction form
    684,990.40/1,027,466.40 = 311,012.80/x
  3. Step 3: Cross multiply
    684,990.40x = 1,027,466.40 × 311,012.80
  4. Step 4: Simplify right side
    684,990.40x = 319,555,201,969.92
  5. Step 5: Solve for x
    x = 319,555,201,969.92/684,990.40
  6. Step 6: Final answer
    x = 466,510.48

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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.