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Finding the Fourth Proportional to 581,438.40, 871,639.20 and 344,529.60

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Solution

The fourth proportional to 581,438.40, 871,639.20 and 344,529.60 is: 516,487.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,438.40 : 871,639.20 = 344,529.60 : x
  2. Step 2: Convert to fraction form
    581,438.40/871,639.20 = 344,529.60/x
  3. Step 3: Cross multiply
    581,438.40x = 871,639.20 × 344,529.60
  4. Step 4: Simplify right side
    581,438.40x = 300,305,504,920.32
  5. Step 5: Solve for x
    x = 300,305,504,920.32/581,438.40
  6. Step 6: Final answer
    x = 516,487.22

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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.