Home / 1,179,131.87-1,769,071.64-420,957.09

Finding the Fourth Proportional to 1,179,131.87, 1,769,071.64 and 420,957.09

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Solution

The fourth proportional to 1,179,131.87, 1,769,071.64 and 420,957.09 is: 631,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,131.87 : 1,769,071.64 = 420,957.09 : x
  2. Step 2: Convert to fraction form
    1,179,131.87/1,769,071.64 = 420,957.09/x
  3. Step 3: Cross multiply
    1,179,131.87x = 1,769,071.64 × 420,957.09
  4. Step 4: Simplify right side
    1,179,131.87x = 744,703,249,575.93
  5. Step 5: Solve for x
    x = 744,703,249,575.93/1,179,131.87
  6. Step 6: Final answer
    x = 631,569.10

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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.