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Finding the Fourth Proportional to 493,763.80, 740,645.70 and 455,272.60

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Solution

The fourth proportional to 493,763.80, 740,645.70 and 455,272.60 is: 682,908.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,763.80 : 740,645.70 = 455,272.60 : x
  2. Step 2: Convert to fraction form
    493,763.80/740,645.70 = 455,272.60/x
  3. Step 3: Cross multiply
    493,763.80x = 740,645.70 × 455,272.60
  4. Step 4: Simplify right side
    493,763.80x = 337,195,693,517.82
  5. Step 5: Solve for x
    x = 337,195,693,517.82/493,763.80
  6. Step 6: Final answer
    x = 682,908.90

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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.