Home / 1,145,690.56-1,581,121.08-636,389.32

Finding the Fourth Proportional to 1,145,690.56, 1,581,121.08 and 636,389.32

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Solution

The fourth proportional to 1,145,690.56, 1,581,121.08 and 636,389.32 is: 878,255.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,690.56 : 1,581,121.08 = 636,389.32 : x
  2. Step 2: Convert to fraction form
    1,145,690.56/1,581,121.08 = 636,389.32/x
  3. Step 3: Cross multiply
    1,145,690.56x = 1,581,121.08 × 636,389.32
  4. Step 4: Simplify right side
    1,145,690.56x = 1,006,208,568,938.87
  5. Step 5: Solve for x
    x = 1,006,208,568,938.87/1,145,690.56
  6. Step 6: Final answer
    x = 878,255.09

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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.