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Finding the Fourth Proportional to 493,772.56, 681,461.60 and 278,926.47

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Solution

The fourth proportional to 493,772.56, 681,461.60 and 278,926.47 is: 384,949.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,772.56 : 681,461.60 = 278,926.47 : x
  2. Step 2: Convert to fraction form
    493,772.56/681,461.60 = 278,926.47/x
  3. Step 3: Cross multiply
    493,772.56x = 681,461.60 × 278,926.47
  4. Step 4: Simplify right side
    493,772.56x = 190,077,677,133.92
  5. Step 5: Solve for x
    x = 190,077,677,133.92/493,772.56
  6. Step 6: Final answer
    x = 384,949.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.