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Finding the Fourth Proportional to 720,379.20, 1,078,062.05 and 446,697.47

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Solution

The fourth proportional to 720,379.20, 1,078,062.05 and 446,697.47 is: 668,491.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,379.20 : 1,078,062.05 = 446,697.47 : x
  2. Step 2: Convert to fraction form
    720,379.20/1,078,062.05 = 446,697.47/x
  3. Step 3: Cross multiply
    720,379.20x = 1,078,062.05 × 446,697.47
  4. Step 4: Simplify right side
    720,379.20x = 481,567,582,614.22
  5. Step 5: Solve for x
    x = 481,567,582,614.22/720,379.20
  6. Step 6: Final answer
    x = 668,491.79

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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.