Home / 405,256.80-607,010.40-263,539.20

Finding the Fourth Proportional to 405,256.80, 607,010.40 and 263,539.20

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Solution

The fourth proportional to 405,256.80, 607,010.40 and 263,539.20 is: 394,739.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,256.80 : 607,010.40 = 263,539.20 : x
  2. Step 2: Convert to fraction form
    405,256.80/607,010.40 = 263,539.20/x
  3. Step 3: Cross multiply
    405,256.80x = 607,010.40 × 263,539.20
  4. Step 4: Simplify right side
    405,256.80x = 159,971,035,207.68
  5. Step 5: Solve for x
    x = 159,971,035,207.68/405,256.80
  6. Step 6: Final answer
    x = 394,739.92

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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.