Home / 812,071.49-1,120,630.07-449,496.05

Finding the Fourth Proportional to 812,071.49, 1,120,630.07 and 449,496.05

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Solution

The fourth proportional to 812,071.49, 1,120,630.07 and 449,496.05 is: 620,288.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,071.49 : 1,120,630.07 = 449,496.05 : x
  2. Step 2: Convert to fraction form
    812,071.49/1,120,630.07 = 449,496.05/x
  3. Step 3: Cross multiply
    812,071.49x = 1,120,630.07 × 449,496.05
  4. Step 4: Simplify right side
    812,071.49x = 503,718,785,496.81
  5. Step 5: Solve for x
    x = 503,718,785,496.81/812,071.49
  6. Step 6: Final answer
    x = 620,288.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.