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Finding the Fourth Proportional to 503,485.20, 756,102.60 and 487,738.80

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Solution

The fourth proportional to 503,485.20, 756,102.60 and 487,738.80 is: 732,455.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,485.20 : 756,102.60 = 487,738.80 : x
  2. Step 2: Convert to fraction form
    503,485.20/756,102.60 = 487,738.80/x
  3. Step 3: Cross multiply
    503,485.20x = 756,102.60 × 487,738.80
  4. Step 4: Simplify right side
    503,485.20x = 368,780,574,800.88
  5. Step 5: Solve for x
    x = 368,780,574,800.88/503,485.20
  6. Step 6: Final answer
    x = 732,455.64

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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.