Home / 642,133.25-886,150.41-387,435.23

Finding the Fourth Proportional to 642,133.25, 886,150.41 and 387,435.23

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Solution

The fourth proportional to 642,133.25, 886,150.41 and 387,435.23 is: 534,664.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,133.25 : 886,150.41 = 387,435.23 : x
  2. Step 2: Convert to fraction form
    642,133.25/886,150.41 = 387,435.23/x
  3. Step 3: Cross multiply
    642,133.25x = 886,150.41 × 387,435.23
  4. Step 4: Simplify right side
    642,133.25x = 343,325,892,516.29
  5. Step 5: Solve for x
    x = 343,325,892,516.29/642,133.25
  6. Step 6: Final answer
    x = 534,664.56

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1.5x scale

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.