Home / 764,461.60-1,146,346.80-343,520.80

Finding the Fourth Proportional to 764,461.60, 1,146,346.80 and 343,520.80

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Solution

The fourth proportional to 764,461.60, 1,146,346.80 and 343,520.80 is: 515,125.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,461.60 : 1,146,346.80 = 343,520.80 : x
  2. Step 2: Convert to fraction form
    764,461.60/1,146,346.80 = 343,520.80/x
  3. Step 3: Cross multiply
    764,461.60x = 1,146,346.80 × 343,520.80
  4. Step 4: Simplify right side
    764,461.60x = 393,793,969,813.44
  5. Step 5: Solve for x
    x = 393,793,969,813.44/764,461.60
  6. Step 6: Final answer
    x = 515,125.90

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1.5x scale

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.