Home / 873,408.12-1,309,669.02-399,687.60

Finding the Fourth Proportional to 873,408.12, 1,309,669.02 and 399,687.60

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Solution

The fourth proportional to 873,408.12, 1,309,669.02 and 399,687.60 is: 599,328.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,408.12 : 1,309,669.02 = 399,687.60 : x
  2. Step 2: Convert to fraction form
    873,408.12/1,309,669.02 = 399,687.60/x
  3. Step 3: Cross multiply
    873,408.12x = 1,309,669.02 × 399,687.60
  4. Step 4: Simplify right side
    873,408.12x = 523,458,467,398.15
  5. Step 5: Solve for x
    x = 523,458,467,398.15/873,408.12
  6. Step 6: Final answer
    x = 599,328.60

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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.