Home / 657,128.14-985,692.21-257,956.90

Finding the Fourth Proportional to 657,128.14, 985,692.21 and 257,956.90

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Solution

The fourth proportional to 657,128.14, 985,692.21 and 257,956.90 is: 386,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,128.14 : 985,692.21 = 257,956.90 : x
  2. Step 2: Convert to fraction form
    657,128.14/985,692.21 = 257,956.90/x
  3. Step 3: Cross multiply
    657,128.14x = 985,692.21 × 257,956.90
  4. Step 4: Simplify right side
    657,128.14x = 254,266,106,845.75
  5. Step 5: Solve for x
    x = 254,266,106,845.75/657,128.14
  6. Step 6: Final answer
    x = 386,935.35

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Similar ratio
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1.5x scale

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.