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Finding the Fourth Proportional to 956,616, 1,320,130.08 and 554,441.28

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Solution

The fourth proportional to 956,616, 1,320,130.08 and 554,441.28 is: 765,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    956,616 : 1,320,130.08 = 554,441.28 : x
  2. Step 2: Convert to fraction form
    956,616/1,320,130.08 = 554,441.28/x
  3. Step 3: Cross multiply
    956,616x = 1,320,130.08 × 554,441.28
  4. Step 4: Simplify right side
    956,616x = 731,934,611,321.70
  5. Step 5: Solve for x
    x = 731,934,611,321.70/956,616
  6. Step 6: Final answer
    x = 765,128.97

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