Home / 529,928.21-731,405.95-300,490.04

Finding the Fourth Proportional to 529,928.21, 731,405.95 and 300,490.04

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Solution

The fourth proportional to 529,928.21, 731,405.95 and 300,490.04 is: 414,735.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,928.21 : 731,405.95 = 300,490.04 : x
  2. Step 2: Convert to fraction form
    529,928.21/731,405.95 = 300,490.04/x
  3. Step 3: Cross multiply
    529,928.21x = 731,405.95 × 300,490.04
  4. Step 4: Simplify right side
    529,928.21x = 219,780,203,171.74
  5. Step 5: Solve for x
    x = 219,780,203,171.74/529,928.21
  6. Step 6: Final answer
    x = 414,735.81

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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.