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Finding the Fourth Proportional to 907,873.80, 1,361,664.90 and 276,640.80

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Solution

The fourth proportional to 907,873.80, 1,361,664.90 and 276,640.80 is: 414,916.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,873.80 : 1,361,664.90 = 276,640.80 : x
  2. Step 2: Convert to fraction form
    907,873.80/1,361,664.90 = 276,640.80/x
  3. Step 3: Cross multiply
    907,873.80x = 1,361,664.90 × 276,640.80
  4. Step 4: Simplify right side
    907,873.80x = 376,692,067,267.92
  5. Step 5: Solve for x
    x = 376,692,067,267.92/907,873.80
  6. Step 6: Final answer
    x = 414,916.77

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1.5x scale

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.