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Finding the Fourth Proportional to 720,545.63, 1,080,779.47 and 365,550.43

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Solution

The fourth proportional to 720,545.63, 1,080,779.47 and 365,550.43 is: 548,305.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,545.63 : 1,080,779.47 = 365,550.43 : x
  2. Step 2: Convert to fraction form
    720,545.63/1,080,779.47 = 365,550.43/x
  3. Step 3: Cross multiply
    720,545.63x = 1,080,779.47 × 365,550.43
  4. Step 4: Simplify right side
    720,545.63x = 395,079,396,377.85
  5. Step 5: Solve for x
    x = 395,079,396,377.85/720,545.63
  6. Step 6: Final answer
    x = 548,305.87

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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.