Home / 421,046.44-631,668.18-287,989.36

Finding the Fourth Proportional to 421,046.44, 631,668.18 and 287,989.36

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Solution

The fourth proportional to 421,046.44, 631,668.18 and 287,989.36 is: 432,051.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,046.44 : 631,668.18 = 287,989.36 : x
  2. Step 2: Convert to fraction form
    421,046.44/631,668.18 = 287,989.36/x
  3. Step 3: Cross multiply
    421,046.44x = 631,668.18 × 287,989.36
  4. Step 4: Simplify right side
    421,046.44x = 181,913,714,890.57
  5. Step 5: Solve for x
    x = 181,913,714,890.57/421,046.44
  6. Step 6: Final answer
    x = 432,051.43

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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.