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Finding the Fourth Proportional to 635,865.60, 955,353.60 and 478,401.60

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Solution

The fourth proportional to 635,865.60, 955,353.60 and 478,401.60 is: 718,772.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,865.60 : 955,353.60 = 478,401.60 : x
  2. Step 2: Convert to fraction form
    635,865.60/955,353.60 = 478,401.60/x
  3. Step 3: Cross multiply
    635,865.60x = 955,353.60 × 478,401.60
  4. Step 4: Simplify right side
    635,865.60x = 457,042,690,805.76
  5. Step 5: Solve for x
    x = 457,042,690,805.76/635,865.60
  6. Step 6: Final answer
    x = 718,772.47

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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.