Home / 642,591.23-886,811.19-356,105.16

Finding the Fourth Proportional to 642,591.23, 886,811.19 and 356,105.16

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Solution

The fourth proportional to 642,591.23, 886,811.19 and 356,105.16 is: 491,444.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,591.23 : 886,811.19 = 356,105.16 : x
  2. Step 2: Convert to fraction form
    642,591.23/886,811.19 = 356,105.16/x
  3. Step 3: Cross multiply
    642,591.23x = 886,811.19 × 356,105.16
  4. Step 4: Simplify right side
    642,591.23x = 315,798,039,369.35
  5. Step 5: Solve for x
    x = 315,798,039,369.35/642,591.23
  6. Step 6: Final answer
    x = 491,444.68

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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.