Home / 811,350.86-1,216,992.44-212,298.75

Finding the Fourth Proportional to 811,350.86, 1,216,992.44 and 212,298.75

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Solution

The fourth proportional to 811,350.86, 1,216,992.44 and 212,298.75 is: 318,439.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,350.86 : 1,216,992.44 = 212,298.75 : x
  2. Step 2: Convert to fraction form
    811,350.86/1,216,992.44 = 212,298.75/x
  3. Step 3: Cross multiply
    811,350.86x = 1,216,992.44 × 212,298.75
  4. Step 4: Simplify right side
    811,350.86x = 258,365,973,771.45
  5. Step 5: Solve for x
    x = 258,365,973,771.45/811,350.86
  6. Step 6: Final answer
    x = 318,439.27

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Double scale
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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.