Home / 678,825.90-1,018,289.88-205,549.38

Finding the Fourth Proportional to 678,825.90, 1,018,289.88 and 205,549.38

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Solution

The fourth proportional to 678,825.90, 1,018,289.88 and 205,549.38 is: 308,339.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,825.90 : 1,018,289.88 = 205,549.38 : x
  2. Step 2: Convert to fraction form
    678,825.90/1,018,289.88 = 205,549.38/x
  3. Step 3: Cross multiply
    678,825.90x = 1,018,289.88 × 205,549.38
  4. Step 4: Simplify right side
    678,825.90x = 209,308,853,494.27
  5. Step 5: Solve for x
    x = 209,308,853,494.27/678,825.90
  6. Step 6: Final answer
    x = 308,339.52

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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.