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Finding the Fourth Proportional to 907,798.60, 1,361,697.90 and 276,711.40

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Solution

The fourth proportional to 907,798.60, 1,361,697.90 and 276,711.40 is: 415,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,798.60 : 1,361,697.90 = 276,711.40 : x
  2. Step 2: Convert to fraction form
    907,798.60/1,361,697.90 = 276,711.40/x
  3. Step 3: Cross multiply
    907,798.60x = 1,361,697.90 × 276,711.40
  4. Step 4: Simplify right side
    907,798.60x = 376,797,332,286.06
  5. Step 5: Solve for x
    x = 376,797,332,286.06/907,798.60
  6. Step 6: Final answer
    x = 415,067.10

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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.