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Finding the Fourth Proportional to 1,330,322.31, 1,835,844.90 and 726,710.31

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Solution

The fourth proportional to 1,330,322.31, 1,835,844.90 and 726,710.31 is: 1,002,860.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,322.31 : 1,835,844.90 = 726,710.31 : x
  2. Step 2: Convert to fraction form
    1,330,322.31/1,835,844.90 = 726,710.31/x
  3. Step 3: Cross multiply
    1,330,322.31x = 1,835,844.90 × 726,710.31
  4. Step 4: Simplify right side
    1,330,322.31x = 1,334,127,416,390.92
  5. Step 5: Solve for x
    x = 1,334,127,416,390.92/1,330,322.31
  6. Step 6: Final answer
    x = 1,002,860.29

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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.