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Finding the Fourth Proportional to 635,588.40, 877,118.31 and 345,205.64

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Solution

The fourth proportional to 635,588.40, 877,118.31 and 345,205.64 is: 476,387.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,588.40 : 877,118.31 = 345,205.64 : x
  2. Step 2: Convert to fraction form
    635,588.40/877,118.31 = 345,205.64/x
  3. Step 3: Cross multiply
    635,588.40x = 877,118.31 × 345,205.64
  4. Step 4: Simplify right side
    635,588.40x = 302,786,183,173.68
  5. Step 5: Solve for x
    x = 302,786,183,173.68/635,588.40
  6. Step 6: Final answer
    x = 476,387.21

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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.