Home / 678,432.30-1,017,796.05-205,105.30

Finding the Fourth Proportional to 678,432.30, 1,017,796.05 and 205,105.30

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Solution

The fourth proportional to 678,432.30, 1,017,796.05 and 205,105.30 is: 307,702.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,432.30 : 1,017,796.05 = 205,105.30 : x
  2. Step 2: Convert to fraction form
    678,432.30/1,017,796.05 = 205,105.30/x
  3. Step 3: Cross multiply
    678,432.30x = 1,017,796.05 × 205,105.30
  4. Step 4: Simplify right side
    678,432.30x = 208,755,364,174.07
  5. Step 5: Solve for x
    x = 208,755,364,174.07/678,432.30
  6. Step 6: Final answer
    x = 307,702.57

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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.