Home / 1,069,289.20-1,603,431.60-620,137.72

Finding the Fourth Proportional to 1,069,289.20, 1,603,431.60 and 620,137.72

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Solution

The fourth proportional to 1,069,289.20, 1,603,431.60 and 620,137.72 is: 929,915.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,289.20 : 1,603,431.60 = 620,137.72 : x
  2. Step 2: Convert to fraction form
    1,069,289.20/1,603,431.60 = 620,137.72/x
  3. Step 3: Cross multiply
    1,069,289.20x = 1,603,431.60 × 620,137.72
  4. Step 4: Simplify right side
    1,069,289.20x = 994,348,416,599.95
  5. Step 5: Solve for x
    x = 994,348,416,599.95/1,069,289.20
  6. Step 6: Final answer
    x = 929,915.33

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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.