Home / 680,686.51-1,021,374.21-281,613.68

Finding the Fourth Proportional to 680,686.51, 1,021,374.21 and 281,613.68

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Solution

The fourth proportional to 680,686.51, 1,021,374.21 and 281,613.68 is: 422,563.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,686.51 : 1,021,374.21 = 281,613.68 : x
  2. Step 2: Convert to fraction form
    680,686.51/1,021,374.21 = 281,613.68/x
  3. Step 3: Cross multiply
    680,686.51x = 1,021,374.21 × 281,613.68
  4. Step 4: Simplify right side
    680,686.51x = 287,632,953,544.68
  5. Step 5: Solve for x
    x = 287,632,953,544.68/680,686.51
  6. Step 6: Final answer
    x = 422,563.03

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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.