Home / 500,815.14-691,109.87-285,913.23

Finding the Fourth Proportional to 500,815.14, 691,109.87 and 285,913.23

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Solution

The fourth proportional to 500,815.14, 691,109.87 and 285,913.23 is: 394,551.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,815.14 : 691,109.87 = 285,913.23 : x
  2. Step 2: Convert to fraction form
    500,815.14/691,109.87 = 285,913.23/x
  3. Step 3: Cross multiply
    500,815.14x = 691,109.87 × 285,913.23
  4. Step 4: Simplify right side
    500,815.14x = 197,597,452,803.61
  5. Step 5: Solve for x
    x = 197,597,452,803.61/500,815.14
  6. Step 6: Final answer
    x = 394,551.68

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Double scale
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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.