Home / 674,760.56-1,011,640.80-408,458.06

Finding the Fourth Proportional to 674,760.56, 1,011,640.80 and 408,458.06

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Solution

The fourth proportional to 674,760.56, 1,011,640.80 and 408,458.06 is: 612,384.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,760.56 : 1,011,640.80 = 408,458.06 : x
  2. Step 2: Convert to fraction form
    674,760.56/1,011,640.80 = 408,458.06/x
  3. Step 3: Cross multiply
    674,760.56x = 1,011,640.80 × 408,458.06
  4. Step 4: Simplify right side
    674,760.56x = 413,212,838,584.85
  5. Step 5: Solve for x
    x = 413,212,838,584.85/674,760.56
  6. Step 6: Final answer
    x = 612,384.40

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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.