Home / 821,234.52-1,231,666.02-259,962.84

Finding the Fourth Proportional to 821,234.52, 1,231,666.02 and 259,962.84

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Solution

The fourth proportional to 821,234.52, 1,231,666.02 and 259,962.84 is: 389,885.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,234.52 : 1,231,666.02 = 259,962.84 : x
  2. Step 2: Convert to fraction form
    821,234.52/1,231,666.02 = 259,962.84/x
  3. Step 3: Cross multiply
    821,234.52x = 1,231,666.02 × 259,962.84
  4. Step 4: Simplify right side
    821,234.52x = 320,187,396,490.70
  5. Step 5: Solve for x
    x = 320,187,396,490.70/821,234.52
  6. Step 6: Final answer
    x = 389,885.46

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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.