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Finding the Fourth Proportional to 478,838.40, 660,797.04 and 274,902.54

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Solution

The fourth proportional to 478,838.40, 660,797.04 and 274,902.54 is: 379,365.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,838.40 : 660,797.04 = 274,902.54 : x
  2. Step 2: Convert to fraction form
    478,838.40/660,797.04 = 274,902.54/x
  3. Step 3: Cross multiply
    478,838.40x = 660,797.04 × 274,902.54
  4. Step 4: Simplify right side
    478,838.40x = 181,654,784,720.48
  5. Step 5: Solve for x
    x = 181,654,784,720.48/478,838.40
  6. Step 6: Final answer
    x = 379,365.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.