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Finding the Fourth Proportional to 640,272.26, 883,626.13 and 364,641.83

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Solution

The fourth proportional to 640,272.26, 883,626.13 and 364,641.83 is: 503,234.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,272.26 : 883,626.13 = 364,641.83 : x
  2. Step 2: Convert to fraction form
    640,272.26/883,626.13 = 364,641.83/x
  3. Step 3: Cross multiply
    640,272.26x = 883,626.13 × 364,641.83
  4. Step 4: Simplify right side
    640,272.26x = 322,207,053,400.69
  5. Step 5: Solve for x
    x = 322,207,053,400.69/640,272.26
  6. Step 6: Final answer
    x = 503,234.44

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1.5x scale

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.