Home / 678,709.62-1,018,195.56-257,952.69

Finding the Fourth Proportional to 678,709.62, 1,018,195.56 and 257,952.69

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Solution

The fourth proportional to 678,709.62, 1,018,195.56 and 257,952.69 is: 386,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,709.62 : 1,018,195.56 = 257,952.69 : x
  2. Step 2: Convert to fraction form
    678,709.62/1,018,195.56 = 257,952.69/x
  3. Step 3: Cross multiply
    678,709.62x = 1,018,195.56 × 257,952.69
  4. Step 4: Simplify right side
    678,709.62x = 262,646,283,648.06
  5. Step 5: Solve for x
    x = 262,646,283,648.06/678,709.62
  6. Step 6: Final answer
    x = 386,978.87

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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.