Home / 826,670.41-1,239,441.85-420,865.27

Finding the Fourth Proportional to 826,670.41, 1,239,441.85 and 420,865.27

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Solution

The fourth proportional to 826,670.41, 1,239,441.85 and 420,865.27 is: 631,010.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,670.41 : 1,239,441.85 = 420,865.27 : x
  2. Step 2: Convert to fraction form
    826,670.41/1,239,441.85 = 420,865.27/x
  3. Step 3: Cross multiply
    826,670.41x = 1,239,441.85 × 420,865.27
  4. Step 4: Simplify right side
    826,670.41x = 521,638,026,277.03
  5. Step 5: Solve for x
    x = 521,638,026,277.03/826,670.41
  6. Step 6: Final answer
    x = 631,010.89

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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.