Home / 1,213,861.60-1,821,829.20-540,978.40

Finding the Fourth Proportional to 1,213,861.60, 1,821,829.20 and 540,978.40

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Solution

The fourth proportional to 1,213,861.60, 1,821,829.20 and 540,978.40 is: 811,929.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,861.60 : 1,821,829.20 = 540,978.40 : x
  2. Step 2: Convert to fraction form
    1,213,861.60/1,821,829.20 = 540,978.40/x
  3. Step 3: Cross multiply
    1,213,861.60x = 1,821,829.20 × 540,978.40
  4. Step 4: Simplify right side
    1,213,861.60x = 985,570,245,689.28
  5. Step 5: Solve for x
    x = 985,570,245,689.28/1,213,861.60
  6. Step 6: Final answer
    x = 811,929.67

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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.