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Finding the Fourth Proportional to 496,728.80, 745,093.20 and 445,407.20

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Solution

The fourth proportional to 496,728.80, 745,093.20 and 445,407.20 is: 668,110.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,728.80 : 745,093.20 = 445,407.20 : x
  2. Step 2: Convert to fraction form
    496,728.80/745,093.20 = 445,407.20/x
  3. Step 3: Cross multiply
    496,728.80x = 745,093.20 × 445,407.20
  4. Step 4: Simplify right side
    496,728.80x = 331,869,875,951.04
  5. Step 5: Solve for x
    x = 331,869,875,951.04/496,728.80
  6. Step 6: Final answer
    x = 668,110.80

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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.