Home / 1,216,240.62-1,678,411.80-664,958.31

Finding the Fourth Proportional to 1,216,240.62, 1,678,411.80 and 664,958.31

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Solution

The fourth proportional to 1,216,240.62, 1,678,411.80 and 664,958.31 is: 917,642.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,240.62 : 1,678,411.80 = 664,958.31 : x
  2. Step 2: Convert to fraction form
    1,216,240.62/1,678,411.80 = 664,958.31/x
  3. Step 3: Cross multiply
    1,216,240.62x = 1,678,411.80 × 664,958.31
  4. Step 4: Simplify right side
    1,216,240.62x = 1,116,073,874,012.06
  5. Step 5: Solve for x
    x = 1,116,073,874,012.06/1,216,240.62
  6. Step 6: Final answer
    x = 917,642.33

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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.