Home / 428,429.09-642,495.67-175,637.81

Finding the Fourth Proportional to 428,429.09, 642,495.67 and 175,637.81

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Solution

The fourth proportional to 428,429.09, 642,495.67 and 175,637.81 is: 263,396.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,429.09 : 642,495.67 = 175,637.81 : x
  2. Step 2: Convert to fraction form
    428,429.09/642,495.67 = 175,637.81/x
  3. Step 3: Cross multiply
    428,429.09x = 642,495.67 × 175,637.81
  4. Step 4: Simplify right side
    428,429.09x = 112,846,532,413.28
  5. Step 5: Solve for x
    x = 112,846,532,413.28/428,429.09
  6. Step 6: Final answer
    x = 263,396.06

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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.