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Finding the Fourth Proportional to 1,926,735.72, 2,890,509.12 and 728,631.24

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Solution

The fourth proportional to 1,926,735.72, 2,890,509.12 and 728,631.24 is: 1,093,100.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926,735.72 : 2,890,509.12 = 728,631.24 : x
  2. Step 2: Convert to fraction form
    1,926,735.72/2,890,509.12 = 728,631.24/x
  3. Step 3: Cross multiply
    1,926,735.72x = 2,890,509.12 × 728,631.24
  4. Step 4: Simplify right side
    1,926,735.72x = 2,106,115,244,336.91
  5. Step 5: Solve for x
    x = 2,106,115,244,336.91/1,926,735.72
  6. Step 6: Final answer
    x = 1,093,100.22

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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.