Home / 403,928.37-605,870.55-123,423.75

Finding the Fourth Proportional to 403,928.37, 605,870.55 and 123,423.75

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Solution

The fourth proportional to 403,928.37, 605,870.55 and 123,423.75 is: 185,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,928.37 : 605,870.55 = 123,423.75 : x
  2. Step 2: Convert to fraction form
    403,928.37/605,870.55 = 123,423.75/x
  3. Step 3: Cross multiply
    403,928.37x = 605,870.55 × 123,423.75
  4. Step 4: Simplify right side
    403,928.37x = 74,778,815,295.56
  5. Step 5: Solve for x
    x = 74,778,815,295.56/403,928.37
  6. Step 6: Final answer
    x = 185,128.90

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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.