Home / 487,828.21-731,742.32-321,577.33

Finding the Fourth Proportional to 487,828.21, 731,742.32 and 321,577.33

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Solution

The fourth proportional to 487,828.21, 731,742.32 and 321,577.33 is: 482,365.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,828.21 : 731,742.32 = 321,577.33 : x
  2. Step 2: Convert to fraction form
    487,828.21/731,742.32 = 321,577.33/x
  3. Step 3: Cross multiply
    487,828.21x = 731,742.32 × 321,577.33
  4. Step 4: Simplify right side
    487,828.21x = 235,311,736,247.01
  5. Step 5: Solve for x
    x = 235,311,736,247.01/487,828.21
  6. Step 6: Final answer
    x = 482,365.99

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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.