Home / 1,221,007.31-1,684,990.10-677,226.37

Finding the Fourth Proportional to 1,221,007.31, 1,684,990.10 and 677,226.37

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Solution

The fourth proportional to 1,221,007.31, 1,684,990.10 and 677,226.37 is: 934,572.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,007.31 : 1,684,990.10 = 677,226.37 : x
  2. Step 2: Convert to fraction form
    1,221,007.31/1,684,990.10 = 677,226.37/x
  3. Step 3: Cross multiply
    1,221,007.31x = 1,684,990.10 × 677,226.37
  4. Step 4: Simplify right side
    1,221,007.31x = 1,141,119,721,310.33
  5. Step 5: Solve for x
    x = 1,141,119,721,310.33/1,221,007.31
  6. Step 6: Final answer
    x = 934,572.39

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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.