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Finding the Fourth Proportional to 940,893.20, 1,409,266.20 and 816,477.20

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Solution

The fourth proportional to 940,893.20, 1,409,266.20 and 816,477.20 is: 1,222,916.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    940,893.20 : 1,409,266.20 = 816,477.20 : x
  2. Step 2: Convert to fraction form
    940,893.20/1,409,266.20 = 816,477.20/x
  3. Step 3: Cross multiply
    940,893.20x = 1,409,266.20 × 816,477.20
  4. Step 4: Simplify right side
    940,893.20x = 1,150,633,721,030.64
  5. Step 5: Solve for x
    x = 1,150,633,721,030.64/940,893.20
  6. Step 6: Final answer
    x = 1,222,916.40

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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.