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Finding the Fourth Proportional to 548,123.56, 756,413.55 and 306,416.32

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Solution

The fourth proportional to 548,123.56, 756,413.55 and 306,416.32 is: 422,856.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,123.56 : 756,413.55 = 306,416.32 : x
  2. Step 2: Convert to fraction form
    548,123.56/756,413.55 = 306,416.32/x
  3. Step 3: Cross multiply
    548,123.56x = 756,413.55 × 306,416.32
  4. Step 4: Simplify right side
    548,123.56x = 231,777,456,389.14
  5. Step 5: Solve for x
    x = 231,777,456,389.14/548,123.56
  6. Step 6: Final answer
    x = 422,856.22

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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.