Home / 428,503.79-643,046.07-175,829.96

Finding the Fourth Proportional to 428,503.79, 643,046.07 and 175,829.96

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Solution

The fourth proportional to 428,503.79, 643,046.07 and 175,829.96 is: 263,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,503.79 : 643,046.07 = 175,829.96 : x
  2. Step 2: Convert to fraction form
    428,503.79/643,046.07 = 175,829.96/x
  3. Step 3: Cross multiply
    428,503.79x = 643,046.07 × 175,829.96
  4. Step 4: Simplify right side
    428,503.79x = 113,066,764,766.26
  5. Step 5: Solve for x
    x = 113,066,764,766.26/428,503.79
  6. Step 6: Final answer
    x = 263,864.10

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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.