Home / 447,905.90-670,280.87-279,505.49

Finding the Fourth Proportional to 447,905.90, 670,280.87 and 279,505.49

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Solution

The fourth proportional to 447,905.90, 670,280.87 and 279,505.49 is: 418,273.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,905.90 : 670,280.87 = 279,505.49 : x
  2. Step 2: Convert to fraction form
    447,905.90/670,280.87 = 279,505.49/x
  3. Step 3: Cross multiply
    447,905.90x = 670,280.87 × 279,505.49
  4. Step 4: Simplify right side
    447,905.90x = 187,347,180,354.34
  5. Step 5: Solve for x
    x = 187,347,180,354.34/447,905.90
  6. Step 6: Final answer
    x = 418,273.52

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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.