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Finding the Fourth Proportional to 624,311.89, 936,429.39 and 384,471.50

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Solution

The fourth proportional to 624,311.89, 936,429.39 and 384,471.50 is: 576,683.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,311.89 : 936,429.39 = 384,471.50 : x
  2. Step 2: Convert to fraction form
    624,311.89/936,429.39 = 384,471.50/x
  3. Step 3: Cross multiply
    624,311.89x = 936,429.39 × 384,471.50
  4. Step 4: Simplify right side
    624,311.89x = 360,030,407,535.24
  5. Step 5: Solve for x
    x = 360,030,407,535.24/624,311.89
  6. Step 6: Final answer
    x = 576,683.57

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1.5x scale

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.