Home / 862,205.76-1,189,844.28-499,839.71

Finding the Fourth Proportional to 862,205.76, 1,189,844.28 and 499,839.71

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Solution

The fourth proportional to 862,205.76, 1,189,844.28 and 499,839.71 is: 689,778.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,205.76 : 1,189,844.28 = 499,839.71 : x
  2. Step 2: Convert to fraction form
    862,205.76/1,189,844.28 = 499,839.71/x
  3. Step 3: Cross multiply
    862,205.76x = 1,189,844.28 × 499,839.71
  4. Step 4: Simplify right side
    862,205.76x = 594,731,413,911.14
  5. Step 5: Solve for x
    x = 594,731,413,911.14/862,205.76
  6. Step 6: Final answer
    x = 689,778.98

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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.