Home / 428,247.91-590,714.78-275,485.25

Finding the Fourth Proportional to 428,247.91, 590,714.78 and 275,485.25

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Solution

The fourth proportional to 428,247.91, 590,714.78 and 275,485.25 is: 379,997.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,247.91 : 590,714.78 = 275,485.25 : x
  2. Step 2: Convert to fraction form
    428,247.91/590,714.78 = 275,485.25/x
  3. Step 3: Cross multiply
    428,247.91x = 590,714.78 × 275,485.25
  4. Step 4: Simplify right side
    428,247.91x = 162,733,208,946.36
  5. Step 5: Solve for x
    x = 162,733,208,946.36/428,247.91
  6. Step 6: Final answer
    x = 379,997.67

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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.