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Finding the Fourth Proportional to 657,046.26, 906,725.19 and 355,240.26

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Solution

The fourth proportional to 657,046.26, 906,725.19 and 355,240.26 is: 490,232.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,046.26 : 906,725.19 = 355,240.26 : x
  2. Step 2: Convert to fraction form
    657,046.26/906,725.19 = 355,240.26/x
  3. Step 3: Cross multiply
    657,046.26x = 906,725.19 × 355,240.26
  4. Step 4: Simplify right side
    657,046.26x = 322,105,292,244.15
  5. Step 5: Solve for x
    x = 322,105,292,244.15/657,046.26
  6. Step 6: Final answer
    x = 490,232.29

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Double scale
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Similar ratio
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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.