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Finding the Fourth Proportional to 635,717.60, 953,090.40 and 320,400.80

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Solution

The fourth proportional to 635,717.60, 953,090.40 and 320,400.80 is: 480,356.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,717.60 : 953,090.40 = 320,400.80 : x
  2. Step 2: Convert to fraction form
    635,717.60/953,090.40 = 320,400.80/x
  3. Step 3: Cross multiply
    635,717.60x = 953,090.40 × 320,400.80
  4. Step 4: Simplify right side
    635,717.60x = 305,370,926,632.32
  5. Step 5: Solve for x
    x = 305,370,926,632.32/635,717.60
  6. Step 6: Final answer
    x = 480,356.26

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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.