Home / 665,675.20-918,524.32-379,200.80

Finding the Fourth Proportional to 665,675.20, 918,524.32 and 379,200.80

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Solution

The fourth proportional to 665,675.20, 918,524.32 and 379,200.80 is: 523,235.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,675.20 : 918,524.32 = 379,200.80 : x
  2. Step 2: Convert to fraction form
    665,675.20/918,524.32 = 379,200.80/x
  3. Step 3: Cross multiply
    665,675.20x = 918,524.32 × 379,200.80
  4. Step 4: Simplify right side
    665,675.20x = 348,305,156,963.46
  5. Step 5: Solve for x
    x = 348,305,156,963.46/665,675.20
  6. Step 6: Final answer
    x = 523,235.89

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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.