Home / 878,957.81-1,318,568.32-318,123.53

Finding the Fourth Proportional to 878,957.81, 1,318,568.32 and 318,123.53

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Solution

The fourth proportional to 878,957.81, 1,318,568.32 and 318,123.53 is: 477,232.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,957.81 : 1,318,568.32 = 318,123.53 : x
  2. Step 2: Convert to fraction form
    878,957.81/1,318,568.32 = 318,123.53/x
  3. Step 3: Cross multiply
    878,957.81x = 1,318,568.32 × 318,123.53
  4. Step 4: Simplify right side
    878,957.81x = 419,467,601,911.73
  5. Step 5: Solve for x
    x = 419,467,601,911.73/878,957.81
  6. Step 6: Final answer
    x = 477,232.92

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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.