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Finding the Fourth Proportional to 491,811.80, 737,717.70 and 488,312.60

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Solution

The fourth proportional to 491,811.80, 737,717.70 and 488,312.60 is: 732,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,811.80 : 737,717.70 = 488,312.60 : x
  2. Step 2: Convert to fraction form
    491,811.80/737,717.70 = 488,312.60/x
  3. Step 3: Cross multiply
    491,811.80x = 737,717.70 × 488,312.60
  4. Step 4: Simplify right side
    491,811.80x = 360,236,848,153.02
  5. Step 5: Solve for x
    x = 360,236,848,153.02/491,811.80
  6. Step 6: Final answer
    x = 732,468.90

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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.