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Finding the Fourth Proportional to 1,309,913.57, 1,964,757.81 and 797,445.71

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Solution

The fourth proportional to 1,309,913.57, 1,964,757.81 and 797,445.71 is: 1,196,100.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,913.57 : 1,964,757.81 = 797,445.71 : x
  2. Step 2: Convert to fraction form
    1,309,913.57/1,964,757.81 = 797,445.71/x
  3. Step 3: Cross multiply
    1,309,913.57x = 1,964,757.81 × 797,445.71
  4. Step 4: Simplify right side
    1,309,913.57x = 1,566,787,686,773.50
  5. Step 5: Solve for x
    x = 1,566,787,686,773.50/1,309,913.57
  6. Step 6: Final answer
    x = 1,196,100.05

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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.