Home / 558,418.40-836,704.20-321,347.60

Finding the Fourth Proportional to 558,418.40, 836,704.20 and 321,347.60

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Solution

The fourth proportional to 558,418.40, 836,704.20 and 321,347.60 is: 481,490.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,418.40 : 836,704.20 = 321,347.60 : x
  2. Step 2: Convert to fraction form
    558,418.40/836,704.20 = 321,347.60/x
  3. Step 3: Cross multiply
    558,418.40x = 836,704.20 × 321,347.60
  4. Step 4: Simplify right side
    558,418.40x = 268,872,886,579.92
  5. Step 5: Solve for x
    x = 268,872,886,579.92/558,418.40
  6. Step 6: Final answer
    x = 481,490.02

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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.