Home / 638,849.20-957,659.40-496,615.60

Finding the Fourth Proportional to 638,849.20, 957,659.40 and 496,615.60

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Solution

The fourth proportional to 638,849.20, 957,659.40 and 496,615.60 is: 744,445.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,849.20 : 957,659.40 = 496,615.60 : x
  2. Step 2: Convert to fraction form
    638,849.20/957,659.40 = 496,615.60/x
  3. Step 3: Cross multiply
    638,849.20x = 957,659.40 × 496,615.60
  4. Step 4: Simplify right side
    638,849.20x = 475,588,597,526.64
  5. Step 5: Solve for x
    x = 475,588,597,526.64/638,849.20
  6. Step 6: Final answer
    x = 744,445.79

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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.