Home / 428,055.76-642,035.04-112,537.27

Finding the Fourth Proportional to 428,055.76, 642,035.04 and 112,537.27

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Solution

The fourth proportional to 428,055.76, 642,035.04 and 112,537.27 is: 168,793.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,055.76 : 642,035.04 = 112,537.27 : x
  2. Step 2: Convert to fraction form
    428,055.76/642,035.04 = 112,537.27/x
  3. Step 3: Cross multiply
    428,055.76x = 642,035.04 × 112,537.27
  4. Step 4: Simplify right side
    428,055.76x = 72,252,870,645.94
  5. Step 5: Solve for x
    x = 72,252,870,645.94/428,055.76
  6. Step 6: Final answer
    x = 168,793.13

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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.