Home / 657,824.84-985,942.64-320,359.80

Finding the Fourth Proportional to 657,824.84, 985,942.64 and 320,359.80

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Solution

The fourth proportional to 657,824.84, 985,942.64 and 320,359.80 is: 480,152.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,824.84 : 985,942.64 = 320,359.80 : x
  2. Step 2: Convert to fraction form
    657,824.84/985,942.64 = 320,359.80/x
  3. Step 3: Cross multiply
    657,824.84x = 985,942.64 × 320,359.80
  4. Step 4: Simplify right side
    657,824.84x = 315,856,386,961.87
  5. Step 5: Solve for x
    x = 315,856,386,961.87/657,824.84
  6. Step 6: Final answer
    x = 480,152.72

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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.