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Finding the Fourth Proportional to 865,786.60, 1,194,782.70 and 483,813.28

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Solution

The fourth proportional to 865,786.60, 1,194,782.70 and 483,813.28 is: 667,660.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,786.60 : 1,194,782.70 = 483,813.28 : x
  2. Step 2: Convert to fraction form
    865,786.60/1,194,782.70 = 483,813.28/x
  3. Step 3: Cross multiply
    865,786.60x = 1,194,782.70 × 483,813.28
  4. Step 4: Simplify right side
    865,786.60x = 578,051,736,974.26
  5. Step 5: Solve for x
    x = 578,051,736,974.26/865,786.60
  6. Step 6: Final answer
    x = 667,660.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.