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Finding the Fourth Proportional to 635,745.60, 953,132.40 and 320,428.80

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Solution

The fourth proportional to 635,745.60, 953,132.40 and 320,428.80 is: 480,398.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,745.60 : 953,132.40 = 320,428.80 : x
  2. Step 2: Convert to fraction form
    635,745.60/953,132.40 = 320,428.80/x
  3. Step 3: Cross multiply
    635,745.60x = 953,132.40 × 320,428.80
  4. Step 4: Simplify right side
    635,745.60x = 305,411,071,173.12
  5. Step 5: Solve for x
    x = 305,411,071,173.12/635,745.60
  6. Step 6: Final answer
    x = 480,398.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.