Home / 644,225.28-966,685.44-378,504.80

Finding the Fourth Proportional to 644,225.28, 966,685.44 and 378,504.80

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Solution

The fourth proportional to 644,225.28, 966,685.44 and 378,504.80 is: 567,961.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,225.28 : 966,685.44 = 378,504.80 : x
  2. Step 2: Convert to fraction form
    644,225.28/966,685.44 = 378,504.80/x
  3. Step 3: Cross multiply
    644,225.28x = 966,685.44 × 378,504.80
  4. Step 4: Simplify right side
    644,225.28x = 365,895,079,130.11
  5. Step 5: Solve for x
    x = 365,895,079,130.11/644,225.28
  6. Step 6: Final answer
    x = 567,961.38

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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.