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Finding the Fourth Proportional to 640,923.66, 960,544.53 and 471,651.66

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Solution

The fourth proportional to 640,923.66, 960,544.53 and 471,651.66 is: 706,858.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,923.66 : 960,544.53 = 471,651.66 : x
  2. Step 2: Convert to fraction form
    640,923.66/960,544.53 = 471,651.66/x
  3. Step 3: Cross multiply
    640,923.66x = 960,544.53 × 471,651.66
  4. Step 4: Simplify right side
    640,923.66x = 453,042,422,078.42
  5. Step 5: Solve for x
    x = 453,042,422,078.42/640,923.66
  6. Step 6: Final answer
    x = 706,858.63

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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.