Home / 1,291,871.82-1,780,935.30-908,709.42

Finding the Fourth Proportional to 1,291,871.82, 1,780,935.30 and 908,709.42

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Solution

The fourth proportional to 1,291,871.82, 1,780,935.30 and 908,709.42 is: 1,252,719.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,871.82 : 1,780,935.30 = 908,709.42 : x
  2. Step 2: Convert to fraction form
    1,291,871.82/1,780,935.30 = 908,709.42/x
  3. Step 3: Cross multiply
    1,291,871.82x = 1,780,935.30 × 908,709.42
  4. Step 4: Simplify right side
    1,291,871.82x = 1,618,352,683,520.53
  5. Step 5: Solve for x
    x = 1,618,352,683,520.53/1,291,871.82
  6. Step 6: Final answer
    x = 1,252,719.24

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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.