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Finding the Fourth Proportional to 646,092.39, 890,651.39 and 413,493.69

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Solution

The fourth proportional to 646,092.39, 890,651.39 and 413,493.69 is: 570,009.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,092.39 : 890,651.39 = 413,493.69 : x
  2. Step 2: Convert to fraction form
    646,092.39/890,651.39 = 413,493.69/x
  3. Step 3: Cross multiply
    646,092.39x = 890,651.39 × 413,493.69
  4. Step 4: Simplify right side
    646,092.39x = 368,278,727,687.26
  5. Step 5: Solve for x
    x = 368,278,727,687.26/646,092.39
  6. Step 6: Final answer
    x = 570,009.39

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Double scale
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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.