Home / 428,089.41-642,083.07-112,570.92

Finding the Fourth Proportional to 428,089.41, 642,083.07 and 112,570.92

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Solution

The fourth proportional to 428,089.41, 642,083.07 and 112,570.92 is: 168,842.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,089.41 : 642,083.07 = 112,570.92 : x
  2. Step 2: Convert to fraction form
    428,089.41/642,083.07 = 112,570.92/x
  3. Step 3: Cross multiply
    428,089.41x = 642,083.07 × 112,570.92
  4. Step 4: Simplify right side
    428,089.41x = 72,279,881,906.32
  5. Step 5: Solve for x
    x = 72,279,881,906.32/428,089.41
  6. Step 6: Final answer
    x = 168,842.96

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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.