Home / 765,286.94-1,056,105.69-421,162.49

Finding the Fourth Proportional to 765,286.94, 1,056,105.69 and 421,162.49

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Solution

The fourth proportional to 765,286.94, 1,056,105.69 and 421,162.49 is: 581,209.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,286.94 : 1,056,105.69 = 421,162.49 : x
  2. Step 2: Convert to fraction form
    765,286.94/1,056,105.69 = 421,162.49/x
  3. Step 3: Cross multiply
    765,286.94x = 1,056,105.69 × 421,162.49
  4. Step 4: Simplify right side
    765,286.94x = 444,792,096,823.04
  5. Step 5: Solve for x
    x = 444,792,096,823.04/765,286.94
  6. Step 6: Final answer
    x = 581,209.58

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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.