Home / 428,529.92-642,688.62-175,882.04

Finding the Fourth Proportional to 428,529.92, 642,688.62 and 175,882.04

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Solution

The fourth proportional to 428,529.92, 642,688.62 and 175,882.04 is: 263,779.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,529.92 : 642,688.62 = 175,882.04 : x
  2. Step 2: Convert to fraction form
    428,529.92/642,688.62 = 175,882.04/x
  3. Step 3: Cross multiply
    428,529.92x = 642,688.62 × 175,882.04
  4. Step 4: Simplify right side
    428,529.92x = 113,037,385,570.39
  5. Step 5: Solve for x
    x = 113,037,385,570.39/428,529.92
  6. Step 6: Final answer
    x = 263,779.45

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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.