Home / 414,548.40-621,822.60-315,015.60

Finding the Fourth Proportional to 414,548.40, 621,822.60 and 315,015.60

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Solution

The fourth proportional to 414,548.40, 621,822.60 and 315,015.60 is: 472,523.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,548.40 : 621,822.60 = 315,015.60 : x
  2. Step 2: Convert to fraction form
    414,548.40/621,822.60 = 315,015.60/x
  3. Step 3: Cross multiply
    414,548.40x = 621,822.60 × 315,015.60
  4. Step 4: Simplify right side
    414,548.40x = 195,883,819,432.56
  5. Step 5: Solve for x
    x = 195,883,819,432.56/414,548.40
  6. Step 6: Final answer
    x = 472,523.40

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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.