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Finding the Fourth Proportional to 635,820.60, 955,286.10 and 478,356.60

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Solution

The fourth proportional to 635,820.60, 955,286.10 and 478,356.60 is: 718,704.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,820.60 : 955,286.10 = 478,356.60 : x
  2. Step 2: Convert to fraction form
    635,820.60/955,286.10 = 478,356.60/x
  3. Step 3: Cross multiply
    635,820.60x = 955,286.10 × 478,356.60
  4. Step 4: Simplify right side
    635,820.60x = 456,967,410,823.26
  5. Step 5: Solve for x
    x = 456,967,410,823.26/635,820.60
  6. Step 6: Final answer
    x = 718,704.95

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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.