Home / 905,847.60-1,357,216.20-431,511.60

Finding the Fourth Proportional to 905,847.60, 1,357,216.20 and 431,511.60

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Solution

The fourth proportional to 905,847.60, 1,357,216.20 and 431,511.60 is: 646,526.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,847.60 : 1,357,216.20 = 431,511.60 : x
  2. Step 2: Convert to fraction form
    905,847.60/1,357,216.20 = 431,511.60/x
  3. Step 3: Cross multiply
    905,847.60x = 1,357,216.20 × 431,511.60
  4. Step 4: Simplify right side
    905,847.60x = 585,654,534,007.92
  5. Step 5: Solve for x
    x = 585,654,534,007.92/905,847.60
  6. Step 6: Final answer
    x = 646,526.56

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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.