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Finding the Fourth Proportional to 488,985.40, 735,446.40 and 437,809.60

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Solution

The fourth proportional to 488,985.40, 735,446.40 and 437,809.60 is: 658,476.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,985.40 : 735,446.40 = 437,809.60 : x
  2. Step 2: Convert to fraction form
    488,985.40/735,446.40 = 437,809.60/x
  3. Step 3: Cross multiply
    488,985.40x = 735,446.40 × 437,809.60
  4. Step 4: Simplify right side
    488,985.40x = 321,985,494,205.44
  5. Step 5: Solve for x
    x = 321,985,494,205.44/488,985.40
  6. Step 6: Final answer
    x = 658,476.70

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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.