Home / 487,828.34-731,742.49-321,577.46

Finding the Fourth Proportional to 487,828.34, 731,742.49 and 321,577.46

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Solution

The fourth proportional to 487,828.34, 731,742.49 and 321,577.46 is: 482,366.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,828.34 : 731,742.49 = 321,577.46 : x
  2. Step 2: Convert to fraction form
    487,828.34/731,742.49 = 321,577.46/x
  3. Step 3: Cross multiply
    487,828.34x = 731,742.49 × 321,577.46
  4. Step 4: Simplify right side
    487,828.34x = 235,311,886,845.62
  5. Step 5: Solve for x
    x = 235,311,886,845.62/487,828.34
  6. Step 6: Final answer
    x = 482,366.17

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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.