Home / 1,145,689.56-1,581,119.70-636,388.32

Finding the Fourth Proportional to 1,145,689.56, 1,581,119.70 and 636,388.32

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Solution

The fourth proportional to 1,145,689.56, 1,581,119.70 and 636,388.32 is: 878,253.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,689.56 : 1,581,119.70 = 636,388.32 : x
  2. Step 2: Convert to fraction form
    1,145,689.56/1,581,119.70 = 636,388.32/x
  3. Step 3: Cross multiply
    1,145,689.56x = 1,581,119.70 × 636,388.32
  4. Step 4: Simplify right side
    1,145,689.56x = 1,006,206,109,601.90
  5. Step 5: Solve for x
    x = 1,006,206,109,601.90/1,145,689.56
  6. Step 6: Final answer
    x = 878,253.71

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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.