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Finding the Fourth Proportional to 890,064.88, 1,335,224.56 and 274,621

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Solution

The fourth proportional to 890,064.88, 1,335,224.56 and 274,621 is: 411,970.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,064.88 : 1,335,224.56 = 274,621 : x
  2. Step 2: Convert to fraction form
    890,064.88/1,335,224.56 = 274,621/x
  3. Step 3: Cross multiply
    890,064.88x = 1,335,224.56 × 274,621
  4. Step 4: Simplify right side
    890,064.88x = 366,680,703,891.76
  5. Step 5: Solve for x
    x = 366,680,703,891.76/890,064.88
  6. Step 6: Final answer
    x = 411,970.76

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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.