Home / 805,946.32-1,208,912.19-300,490.12

Finding the Fourth Proportional to 805,946.32, 1,208,912.19 and 300,490.12

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Solution

The fourth proportional to 805,946.32, 1,208,912.19 and 300,490.12 is: 450,732.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,946.32 : 1,208,912.19 = 300,490.12 : x
  2. Step 2: Convert to fraction form
    805,946.32/1,208,912.19 = 300,490.12/x
  3. Step 3: Cross multiply
    805,946.32x = 1,208,912.19 × 300,490.12
  4. Step 4: Simplify right side
    805,946.32x = 363,266,169,042.56
  5. Step 5: Solve for x
    x = 363,266,169,042.56/805,946.32
  6. Step 6: Final answer
    x = 450,732.46

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1.5x scale

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.