Home / 657,256.80-985,885.20-257,910.60

Finding the Fourth Proportional to 657,256.80, 985,885.20 and 257,910.60

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Solution

The fourth proportional to 657,256.80, 985,885.20 and 257,910.60 is: 386,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,256.80 : 985,885.20 = 257,910.60 : x
  2. Step 2: Convert to fraction form
    657,256.80/985,885.20 = 257,910.60/x
  3. Step 3: Cross multiply
    657,256.80x = 985,885.20 × 257,910.60
  4. Step 4: Simplify right side
    657,256.80x = 254,270,243,463.12
  5. Step 5: Solve for x
    x = 254,270,243,463.12/657,256.80
  6. Step 6: Final answer
    x = 386,865.90

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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.