Home / 859,283.40-1,286,961.78-410,318.76

Finding the Fourth Proportional to 859,283.40, 1,286,961.78 and 410,318.76

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Solution

The fourth proportional to 859,283.40, 1,286,961.78 and 410,318.76 is: 614,540.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,283.40 : 1,286,961.78 = 410,318.76 : x
  2. Step 2: Convert to fraction form
    859,283.40/1,286,961.78 = 410,318.76/x
  3. Step 3: Cross multiply
    859,283.40x = 1,286,961.78 × 410,318.76
  4. Step 4: Simplify right side
    859,283.40x = 528,064,561,736.99
  5. Step 5: Solve for x
    x = 528,064,561,736.99/859,283.40
  6. Step 6: Final answer
    x = 614,540.63

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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.