Home / 642,134.25-886,151.79-387,436.23

Finding the Fourth Proportional to 642,134.25, 886,151.79 and 387,436.23

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Solution

The fourth proportional to 642,134.25, 886,151.79 and 387,436.23 is: 534,665.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,134.25 : 886,151.79 = 387,436.23 : x
  2. Step 2: Convert to fraction form
    642,134.25/886,151.79 = 387,436.23/x
  3. Step 3: Cross multiply
    642,134.25x = 886,151.79 × 387,436.23
  4. Step 4: Simplify right side
    642,134.25x = 343,327,308,725.35
  5. Step 5: Solve for x
    x = 343,327,308,725.35/642,134.25
  6. Step 6: Final answer
    x = 534,665.93

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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.