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Finding the Fourth Proportional to 635,838.60, 955,313.10 and 478,374.60

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Solution

The fourth proportional to 635,838.60, 955,313.10 and 478,374.60 is: 718,731.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,838.60 : 955,313.10 = 478,374.60 : x
  2. Step 2: Convert to fraction form
    635,838.60/955,313.10 = 478,374.60/x
  3. Step 3: Cross multiply
    635,838.60x = 955,313.10 × 478,374.60
  4. Step 4: Simplify right side
    635,838.60x = 456,997,522,087.26
  5. Step 5: Solve for x
    x = 456,997,522,087.26/635,838.60
  6. Step 6: Final answer
    x = 718,731.96

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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.