Home / 782,120.20-1,173,180.30-408,094.60

Finding the Fourth Proportional to 782,120.20, 1,173,180.30 and 408,094.60

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Solution

The fourth proportional to 782,120.20, 1,173,180.30 and 408,094.60 is: 612,141.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,120.20 : 1,173,180.30 = 408,094.60 : x
  2. Step 2: Convert to fraction form
    782,120.20/1,173,180.30 = 408,094.60/x
  3. Step 3: Cross multiply
    782,120.20x = 1,173,180.30 × 408,094.60
  4. Step 4: Simplify right side
    782,120.20x = 478,768,545,256.38
  5. Step 5: Solve for x
    x = 478,768,545,256.38/782,120.20
  6. Step 6: Final answer
    x = 612,141.90

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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.