Home / 457,225.80-631,279.70-285,405.36

Finding the Fourth Proportional to 457,225.80, 631,279.70 and 285,405.36

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Solution

The fourth proportional to 457,225.80, 631,279.70 and 285,405.36 is: 394,051.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,225.80 : 631,279.70 = 285,405.36 : x
  2. Step 2: Convert to fraction form
    457,225.80/631,279.70 = 285,405.36/x
  3. Step 3: Cross multiply
    457,225.80x = 631,279.70 × 285,405.36
  4. Step 4: Simplify right side
    457,225.80x = 180,170,610,039.19
  5. Step 5: Solve for x
    x = 180,170,610,039.19/457,225.80
  6. Step 6: Final answer
    x = 394,051.71

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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.