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Finding the Fourth Proportional to 488,915.40, 735,341.40 and 437,739.60

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Solution

The fourth proportional to 488,915.40, 735,341.40 and 437,739.60 is: 658,371.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,915.40 : 735,341.40 = 437,739.60 : x
  2. Step 2: Convert to fraction form
    488,915.40/735,341.40 = 437,739.60/x
  3. Step 3: Cross multiply
    488,915.40x = 735,341.40 × 437,739.60
  4. Step 4: Simplify right side
    488,915.40x = 321,888,050,299.44
  5. Step 5: Solve for x
    x = 321,888,050,299.44/488,915.40
  6. Step 6: Final answer
    x = 658,371.67

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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.