Home / 729,806.05-1,007,131.98-407,515.96

Finding the Fourth Proportional to 729,806.05, 1,007,131.98 and 407,515.96

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Solution

The fourth proportional to 729,806.05, 1,007,131.98 and 407,515.96 is: 562,371.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,806.05 : 1,007,131.98 = 407,515.96 : x
  2. Step 2: Convert to fraction form
    729,806.05/1,007,131.98 = 407,515.96/x
  3. Step 3: Cross multiply
    729,806.05x = 1,007,131.98 × 407,515.96
  4. Step 4: Simplify right side
    729,806.05x = 410,422,355,676.40
  5. Step 5: Solve for x
    x = 410,422,355,676.40/729,806.05
  6. Step 6: Final answer
    x = 562,371.82

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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.