Home / 986,005.43-1,479,155.77-311,862.68

Finding the Fourth Proportional to 986,005.43, 1,479,155.77 and 311,862.68

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Solution

The fourth proportional to 986,005.43, 1,479,155.77 and 311,862.68 is: 467,840.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,005.43 : 1,479,155.77 = 311,862.68 : x
  2. Step 2: Convert to fraction form
    986,005.43/1,479,155.77 = 311,862.68/x
  3. Step 3: Cross multiply
    986,005.43x = 1,479,155.77 × 311,862.68
  4. Step 4: Simplify right side
    986,005.43x = 461,293,483,516.45
  5. Step 5: Solve for x
    x = 461,293,483,516.45/986,005.43
  6. Step 6: Final answer
    x = 467,840.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.