Home / 525,418.25-724,943.72-321,394.64

Finding the Fourth Proportional to 525,418.25, 724,943.72 and 321,394.64

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Solution

The fourth proportional to 525,418.25, 724,943.72 and 321,394.64 is: 443,442.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,418.25 : 724,943.72 = 321,394.64 : x
  2. Step 2: Convert to fraction form
    525,418.25/724,943.72 = 321,394.64/x
  3. Step 3: Cross multiply
    525,418.25x = 724,943.72 × 321,394.64
  4. Step 4: Simplify right side
    525,418.25x = 232,993,023,088.43
  5. Step 5: Solve for x
    x = 232,993,023,088.43/525,418.25
  6. Step 6: Final answer
    x = 443,442.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.