Home / 657,956.20-985,184.70-420,010.60

Finding the Fourth Proportional to 657,956.20, 985,184.70 and 420,010.60

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Solution

The fourth proportional to 657,956.20, 985,184.70 and 420,010.60 is: 628,899.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,956.20 : 985,184.70 = 420,010.60 : x
  2. Step 2: Convert to fraction form
    657,956.20/985,184.70 = 420,010.60/x
  3. Step 3: Cross multiply
    657,956.20x = 985,184.70 × 420,010.60
  4. Step 4: Simplify right side
    657,956.20x = 413,788,016,957.82
  5. Step 5: Solve for x
    x = 413,788,016,957.82/657,956.20
  6. Step 6: Final answer
    x = 628,899.03

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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.