Home / 657,439.98-907,266.51-355,633.26

Finding the Fourth Proportional to 657,439.98, 907,266.51 and 355,633.26

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Solution

The fourth proportional to 657,439.98, 907,266.51 and 355,633.26 is: 490,773.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,439.98 : 907,266.51 = 355,633.26 : x
  2. Step 2: Convert to fraction form
    657,439.98/907,266.51 = 355,633.26/x
  3. Step 3: Cross multiply
    657,439.98x = 907,266.51 × 355,633.26
  4. Step 4: Simplify right side
    657,439.98x = 322,654,146,640.12
  5. Step 5: Solve for x
    x = 322,654,146,640.12/657,439.98
  6. Step 6: Final answer
    x = 490,773.54

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Half scale
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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.