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Finding the Fourth Proportional to 1,285,177.86, 1,927,787.26 and 486,244.88

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Solution

The fourth proportional to 1,285,177.86, 1,927,787.26 and 486,244.88 is: 729,375.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,177.86 : 1,927,787.26 = 486,244.88 : x
  2. Step 2: Convert to fraction form
    1,285,177.86/1,927,787.26 = 486,244.88/x
  3. Step 3: Cross multiply
    1,285,177.86x = 1,927,787.26 × 486,244.88
  4. Step 4: Simplify right side
    1,285,177.86x = 937,376,684,904.23
  5. Step 5: Solve for x
    x = 937,376,684,904.23/1,285,177.86
  6. Step 6: Final answer
    x = 729,375.06

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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.