Home / 428,734.66-642,541.38-175,718.92

Finding the Fourth Proportional to 428,734.66, 642,541.38 and 175,718.92

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Solution

The fourth proportional to 428,734.66, 642,541.38 and 175,718.92 is: 263,348.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,734.66 : 642,541.38 = 175,718.92 : x
  2. Step 2: Convert to fraction form
    428,734.66/642,541.38 = 175,718.92/x
  3. Step 3: Cross multiply
    428,734.66x = 642,541.38 × 175,718.92
  4. Step 4: Simplify right side
    428,734.66x = 112,906,677,348.91
  5. Step 5: Solve for x
    x = 112,906,677,348.91/428,734.66
  6. Step 6: Final answer
    x = 263,348.61

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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.