Home / 428,577.40-642,914.16-175,847.68

Finding the Fourth Proportional to 428,577.40, 642,914.16 and 175,847.68

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Solution

The fourth proportional to 428,577.40, 642,914.16 and 175,847.68 is: 263,791.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,577.40 : 642,914.16 = 175,847.68 : x
  2. Step 2: Convert to fraction form
    428,577.40/642,914.16 = 175,847.68/x
  3. Step 3: Cross multiply
    428,577.40x = 642,914.16 × 175,847.68
  4. Step 4: Simplify right side
    428,577.40x = 113,054,963,475.15
  5. Step 5: Solve for x
    x = 113,054,963,475.15/428,577.40
  6. Step 6: Final answer
    x = 263,791.24

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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.