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Finding the Fourth Proportional to 581,439.40, 871,640.70 and 344,530.60

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Solution

The fourth proportional to 581,439.40, 871,640.70 and 344,530.60 is: 516,488.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,439.40 : 871,640.70 = 344,530.60 : x
  2. Step 2: Convert to fraction form
    581,439.40/871,640.70 = 344,530.60/x
  3. Step 3: Cross multiply
    581,439.40x = 871,640.70 × 344,530.60
  4. Step 4: Simplify right side
    581,439.40x = 300,306,893,355.42
  5. Step 5: Solve for x
    x = 300,306,893,355.42/581,439.40
  6. Step 6: Final answer
    x = 516,488.72

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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.