Home / 428,731.66-642,536.88-175,715.92

Finding the Fourth Proportional to 428,731.66, 642,536.88 and 175,715.92

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Solution

The fourth proportional to 428,731.66, 642,536.88 and 175,715.92 is: 263,344.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,731.66 : 642,536.88 = 175,715.92 : x
  2. Step 2: Convert to fraction form
    428,731.66/642,536.88 = 175,715.92/x
  3. Step 3: Cross multiply
    428,731.66x = 642,536.88 × 175,715.92
  4. Step 4: Simplify right side
    428,731.66x = 112,903,959,003.13
  5. Step 5: Solve for x
    x = 112,903,959,003.13/428,731.66
  6. Step 6: Final answer
    x = 263,344.11

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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.