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Finding the Fourth Proportional to 1,309,916.58, 1,964,762.31 and 797,448.72

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Solution

The fourth proportional to 1,309,916.58, 1,964,762.31 and 797,448.72 is: 1,196,104.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,916.58 : 1,964,762.31 = 797,448.72 : x
  2. Step 2: Convert to fraction form
    1,309,916.58/1,964,762.31 = 797,448.72/x
  3. Step 3: Cross multiply
    1,309,916.58x = 1,964,762.31 × 797,448.72
  4. Step 4: Simplify right side
    1,309,916.58x = 1,566,797,179,389.93
  5. Step 5: Solve for x
    x = 1,566,797,179,389.93/1,309,916.58
  6. Step 6: Final answer
    x = 1,196,104.55

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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.