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Finding the Fourth Proportional to 941,520, 1,412,280 and 276,672

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Solution

The fourth proportional to 941,520, 1,412,280 and 276,672 is: 415,008

Step by Step Solution

  1. Step 1: Write the proportion equation
    941,520 : 1,412,280 = 276,672 : x
  2. Step 2: Convert to fraction form
    941,520/1,412,280 = 276,672/x
  3. Step 3: Cross multiply
    941,520x = 1,412,280 × 276,672
  4. Step 4: Simplify right side
    941,520x = 390,738,332,160
  5. Step 5: Solve for x
    x = 390,738,332,160/941,520
  6. Step 6: Final answer
    x = 415,008

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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.