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Finding the Fourth Proportional to 802,111.60, 1,106,808.64 and 479,704.04

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Solution

The fourth proportional to 802,111.60, 1,106,808.64 and 479,704.04 is: 661,928.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,111.60 : 1,106,808.64 = 479,704.04 : x
  2. Step 2: Convert to fraction form
    802,111.60/1,106,808.64 = 479,704.04/x
  3. Step 3: Cross multiply
    802,111.60x = 1,106,808.64 × 479,704.04
  4. Step 4: Simplify right side
    802,111.60x = 530,940,576,114.91
  5. Step 5: Solve for x
    x = 530,940,576,114.91/802,111.60
  6. Step 6: Final answer
    x = 661,928.56

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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.