Home / 809,211.28-1,117,089.48-469,613.92

Finding the Fourth Proportional to 809,211.28, 1,117,089.48 and 469,613.92

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Solution

The fourth proportional to 809,211.28, 1,117,089.48 and 469,613.92 is: 648,286.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,211.28 : 1,117,089.48 = 469,613.92 : x
  2. Step 2: Convert to fraction form
    809,211.28/1,117,089.48 = 469,613.92/x
  3. Step 3: Cross multiply
    809,211.28x = 1,117,089.48 × 469,613.92
  4. Step 4: Simplify right side
    809,211.28x = 524,600,769,693.56
  5. Step 5: Solve for x
    x = 524,600,769,693.56/809,211.28
  6. Step 6: Final answer
    x = 648,286.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.