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Finding the Fourth Proportional to 664,079.94, 916,315.87 and 373,651.20

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Solution

The fourth proportional to 664,079.94, 916,315.87 and 373,651.20 is: 515,574.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,079.94 : 916,315.87 = 373,651.20 : x
  2. Step 2: Convert to fraction form
    664,079.94/916,315.87 = 373,651.20/x
  3. Step 3: Cross multiply
    664,079.94x = 916,315.87 × 373,651.20
  4. Step 4: Simplify right side
    664,079.94x = 342,382,524,404.54
  5. Step 5: Solve for x
    x = 342,382,524,404.54/664,079.94
  6. Step 6: Final answer
    x = 515,574.26

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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.