Home / 387,055.26-579,542.24-315,683.43

Finding the Fourth Proportional to 387,055.26, 579,542.24 and 315,683.43

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Solution

The fourth proportional to 387,055.26, 579,542.24 and 315,683.43 is: 472,676.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,055.26 : 579,542.24 = 315,683.43 : x
  2. Step 2: Convert to fraction form
    387,055.26/579,542.24 = 315,683.43/x
  3. Step 3: Cross multiply
    387,055.26x = 579,542.24 × 315,683.43
  4. Step 4: Simplify right side
    387,055.26x = 182,951,880,769.01
  5. Step 5: Solve for x
    x = 182,951,880,769.01/387,055.26
  6. Step 6: Final answer
    x = 472,676.38

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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.