Home / 428,657.67-642,941.15-175,964.81

Finding the Fourth Proportional to 428,657.67, 642,941.15 and 175,964.81

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Solution

The fourth proportional to 428,657.67, 642,941.15 and 175,964.81 is: 263,928.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,657.67 : 642,941.15 = 175,964.81 : x
  2. Step 2: Convert to fraction form
    428,657.67/642,941.15 = 175,964.81/x
  3. Step 3: Cross multiply
    428,657.67x = 642,941.15 × 175,964.81
  4. Step 4: Simplify right side
    428,657.67x = 113,135,013,206.40
  5. Step 5: Solve for x
    x = 113,135,013,206.40/428,657.67
  6. Step 6: Final answer
    x = 263,928.59

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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.