Home / 428,380.58-642,566.10-175,604.60

Finding the Fourth Proportional to 428,380.58, 642,566.10 and 175,604.60

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Solution

The fourth proportional to 428,380.58, 642,566.10 and 175,604.60 is: 263,404.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,380.58 : 642,566.10 = 175,604.60 : x
  2. Step 2: Convert to fraction form
    428,380.58/642,566.10 = 175,604.60/x
  3. Step 3: Cross multiply
    428,380.58x = 642,566.10 × 175,604.60
  4. Step 4: Simplify right side
    428,380.58x = 112,837,562,964.06
  5. Step 5: Solve for x
    x = 112,837,562,964.06/428,380.58
  6. Step 6: Final answer
    x = 263,404.94

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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.