Home / 811,243.40-1,216,865.10-545,822.60

Finding the Fourth Proportional to 811,243.40, 1,216,865.10 and 545,822.60

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Solution

The fourth proportional to 811,243.40, 1,216,865.10 and 545,822.60 is: 818,733.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,243.40 : 1,216,865.10 = 545,822.60 : x
  2. Step 2: Convert to fraction form
    811,243.40/1,216,865.10 = 545,822.60/x
  3. Step 3: Cross multiply
    811,243.40x = 1,216,865.10 × 545,822.60
  4. Step 4: Simplify right side
    811,243.40x = 664,192,472,731.26
  5. Step 5: Solve for x
    x = 664,192,472,731.26/811,243.40
  6. Step 6: Final answer
    x = 818,733.90

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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.